//.........这里部分代码省略.........
            // If no html has been given, BUT there is an html wrapping template then
            // auto convert the text to html and then wrap it.
            $autohtml = trim(text_to_html($messagetext));
            $context['body'] = $autohtml;
            $temphtml = $renderer->render_from_template('core/email_html', $context);
            if ($autohtml != $temphtml) {
                $messagehtml = $temphtml;
            }
        }
    }
    $context['body'] = $messagetext;
    $mail->Subject = $renderer->render_from_template('core/email_subject', $context);
    $mail->FromName = $renderer->render_from_template('core/email_fromname', $context);
    $messagetext = $renderer->render_from_template('core/email_text', $context);
    // Autogenerate a MessageID if it's missing.
    if (empty($mail->MessageID)) {
        $mail->MessageID = generate_email_messageid();
    }
    if ($messagehtml && !empty($user->mailformat) && $user->mailformat == 1) {
        // Don't ever send HTML to users who don't want it.
        $mail->isHTML(true);
        $mail->Encoding = 'quoted-printable';
        $mail->Body = $messagehtml;
        $mail->AltBody = "\n{$messagetext}\n";
    } else {
        $mail->IsHTML(false);
        $mail->Body = "\n{$messagetext}\n";
    }
    if ($attachment && $attachname) {
        if (preg_match("~\\.\\.~", $attachment)) {
            // Security check for ".." in dir path.
            $temprecipients[] = array($supportuser->email, fullname($supportuser, true));
            $mail->addStringAttachment('Error in attachment.  User attempted to attach a filename with a unsafe name.', 'error.txt', '8bit', 'text/plain');
        } else {
            require_once $CFG->libdir . '/filelib.php';
            $mimetype = mimeinfo('type', $attachname);
            $attachmentpath = $attachment;
            // Before doing the comparison, make sure that the paths are correct (Windows uses slashes in the other direction).
            $attachpath = str_replace('\\', '/', $attachmentpath);
            // Make sure both variables are normalised before comparing.
            $temppath = str_replace('\\', '/', realpath($CFG->tempdir));
            // If the attachment is a full path to a file in the tempdir, use it as is,
            // otherwise assume it is a relative path from the dataroot (for backwards compatibility reasons).
            if (strpos($attachpath, $temppath) !== 0) {
                $attachmentpath = $CFG->dataroot . '/' . $attachmentpath;
            }
            $mail->addAttachment($attachmentpath, $attachname, 'base64', $mimetype);
        }
    }
    // Check if the email should be sent in an other charset then the default UTF-8.
    if (!empty($CFG->sitemailcharset) || !empty($CFG->allowusermailcharset)) {
        // Use the defined site mail charset or eventually the one preferred by the recipient.
        $charset = $CFG->sitemailcharset;
        if (!empty($CFG->allowusermailcharset)) {
            if ($useremailcharset = get_user_preferences('mailcharset', '0', $user->id)) {
                $charset = $useremailcharset;
            }
        }
        // Convert all the necessary strings if the charset is supported.
        $charsets = get_list_of_charsets();
        unset($charsets['UTF-8']);
        if (in_array($charset, $charsets)) {
            $mail->CharSet = $charset;
            $mail->FromName = core_text::convert($mail->FromName, 'utf-8', strtolower($charset));
            $mail->Subject = core_text::convert($mail->Subject, 'utf-8', strtolower($charset));
            $mail->Body = core_text::convert($mail->Body, 'utf-8', strtolower($charset));
            $mail->AltBody = core_text::convert($mail->AltBody, 'utf-8', strtolower($charset));
            foreach ($temprecipients as $key => $values) {
                $temprecipients[$key][1] = core_text::convert($values[1], 'utf-8', strtolower($charset));
            }
            foreach ($tempreplyto as $key => $values) {
                $tempreplyto[$key][1] = core_text::convert($values[1], 'utf-8', strtolower($charset));
            }
        }
    }
    foreach ($temprecipients as $values) {
        $mail->addAddress($values[0], $values[1]);
    }
    foreach ($tempreplyto as $values) {
        $mail->addReplyTo($values[0], $values[1]);
    }
    if ($mail->send()) {
        set_send_count($user);
        if (!empty($mail->SMTPDebug)) {
            echo '</pre>';
        }
        return true;
    } else {
        // Trigger event for failing to send email.
        $event = \core\event\email_failed::create(array('context' => context_system::instance(), 'userid' => $from->id, 'relateduserid' => $user->id, 'other' => array('subject' => $subject, 'message' => $messagetext, 'errorinfo' => $mail->ErrorInfo)));
        $event->trigger();
        if (CLI_SCRIPT) {
            mtrace('Error: lib/moodlelib.php email_to_user(): ' . $mail->ErrorInfo);
        }
        if (!empty($mail->SMTPDebug)) {
            echo '</pre>';
        }
        return false;
    }
}

function useredit_shared_definition(&$mform, $editoroptions = null)
{
    global $CFG, $USER, $DB;
    $user = $DB->get_record('user', array('id' => $USER->id));
    useredit_load_preferences($user, false);
    $strrequired = get_string('required');
    $nameordercheck = new stdClass();
    $nameordercheck->firstname = 'a';
    $nameordercheck->lastname = 'b';
    if (fullname($nameordercheck) == 'b a') {
        // See MDL-4325
        $mform->addElement('text', 'lastname', get_string('lastname'), 'maxlength="100" size="30"');
        $mform->addElement('text', 'firstname', get_string('firstname'), 'maxlength="100" size="30"');
    } else {
        $mform->addElement('text', 'firstname', get_string('firstname'), 'maxlength="100" size="30"');
        $mform->addElement('text', 'lastname', get_string('lastname'), 'maxlength="100" size="30"');
    }
    $mform->addRule('firstname', $strrequired, 'required', null, 'client');
    $mform->setType('firstname', PARAM_NOTAGS);
    $mform->addRule('lastname', $strrequired, 'required', null, 'client');
    $mform->setType('lastname', PARAM_NOTAGS);
    // Do not show email field if change confirmation is pending
    if (!empty($CFG->emailchangeconfirmation) and !empty($user->preference_newemail)) {
        $notice = get_string('emailchangepending', 'auth', $user);
        $notice .= '<br /><a href="edit.php?cancelemailchange=1&amp;id=' . $user->id . '">' . get_string('emailchangecancel', 'auth') . '</a>';
        $mform->addElement('static', 'emailpending', get_string('email'), $notice);
    } else {
        $mform->addElement('text', 'email', get_string('email'), 'maxlength="100" size="30"');
        $mform->addRule('email', $strrequired, 'required', null, 'client');
    }
    $choices = array();
    $choices['0'] = get_string('emaildisplayno');
    $choices['1'] = get_string('emaildisplayyes');
    $choices['2'] = get_string('emaildisplaycourse');
    $mform->addElement('select', 'maildisplay', get_string('emaildisplay'), $choices);
    $mform->setDefault('maildisplay', 2);
    $choices = array();
    $choices['0'] = get_string('textformat');
    $choices['1'] = get_string('htmlformat');
    $mform->addElement('select', 'mailformat', get_string('emailformat'), $choices);
    $mform->setDefault('mailformat', 1);
    if (!empty($CFG->allowusermailcharset)) {
        $choices = array();
        $charsets = get_list_of_charsets();
        if (!empty($CFG->sitemailcharset)) {
            $choices['0'] = get_string('site') . ' (' . $CFG->sitemailcharset . ')';
        } else {
            $choices['0'] = get_string('site') . ' (UTF-8)';
        }
        $choices = array_merge($choices, $charsets);
        $mform->addElement('select', 'preference_mailcharset', get_string('emailcharset'), $choices);
    }
    $choices = array();
    $choices['0'] = get_string('emaildigestoff');
    $choices['1'] = get_string('emaildigestcomplete');
    $choices['2'] = get_string('emaildigestsubjects');
    $mform->addElement('select', 'maildigest', get_string('emaildigest'), $choices);
    $mform->setDefault('maildigest', 0);
    $choices = array();
    $choices['1'] = get_string('autosubscribeyes');
    $choices['0'] = get_string('autosubscribeno');
    $mform->addElement('select', 'autosubscribe', get_string('autosubscribe'), $choices);
    $mform->setDefault('autosubscribe', 1);
    if (!empty($CFG->forum_trackreadposts)) {
        $choices = array();
        $choices['0'] = get_string('trackforumsno');
        $choices['1'] = get_string('trackforumsyes');
        $mform->addElement('select', 'trackforums', get_string('trackforums'), $choices);
        $mform->setDefault('trackforums', 0);
    }
    $editors = editors_get_enabled();
    if (count($editors) > 1) {
        $choices = array();
        $choices['0'] = get_string('texteditor');
        $choices['1'] = get_string('htmleditor');
        $mform->addElement('select', 'htmleditor', get_string('textediting'), $choices);
        $mform->setDefault('htmleditor', 1);
    } else {
        $mform->addElement('hidden', 'htmleditor');
        $mform->setDefault('htmleditor', 1);
        $mform->setType('htmleditor', PARAM_INT);
    }
    if (empty($CFG->enableajax)) {
        $mform->addElement('static', 'ajaxdisabled', get_string('ajaxuse'), get_string('ajaxno'));
    } else {
        $choices = array();
        $choices['0'] = get_string('ajaxno');
        $choices['1'] = get_string('ajaxyes');
        $mform->addElement('select', 'ajax', get_string('ajaxuse'), $choices);
        $mform->setDefault('ajax', 0);
    }
    $choices = array();
    $choices['0'] = get_string('screenreaderno');
    $choices['1'] = get_string('screenreaderyes');
    $mform->addElement('select', 'screenreader', get_string('screenreaderuse'), $choices);
    $mform->setDefault('screenreader', 0);
    $mform->addHelpButton('screenreader', 'screenreaderuse');
    $mform->addElement('text', 'city', get_string('city'), 'maxlength="120" size="21"');
    $mform->setType('city', PARAM_MULTILANG);
    $mform->addRule('city', $strrequired, 'required', null, 'client');
//.........这里部分代码省略.........

 /**
  * Creates necessary fields in the messaging config form.
  *
  * @param array $preferences An array of user preferences
  */
 function config_form($preferences)
 {
     global $USER, $OUTPUT, $CFG;
     $string = '';
     $choices = array();
     $choices['0'] = get_string('textformat');
     $choices['1'] = get_string('htmlformat');
     $current = $preferences->mailformat;
     $string .= $OUTPUT->container(html_writer::label(get_string('emailformat'), 'mailformat'));
     $string .= $OUTPUT->container(html_writer::select($choices, 'mailformat', $current, false, array('id' => 'mailformat')));
     $string .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'userid', 'value' => $USER->id));
     if (!empty($CFG->allowusermailcharset)) {
         $choices = array();
         $charsets = get_list_of_charsets();
         if (!empty($CFG->sitemailcharset)) {
             $choices['0'] = get_string('site') . ' (' . $CFG->sitemailcharset . ')';
         } else {
             $choices['0'] = get_string('site') . ' (UTF-8)';
         }
         $choices = array_merge($choices, $charsets);
         $current = $preferences->mailcharset;
         $string .= $OUTPUT->container(html_writer::label(get_string('emailcharset'), 'mailcharset'));
         $string .= $OUTPUT->container(html_writer::select($choices, 'preference_mailcharset', $current, false, array('id' => 'mailcharset')));
     }
     if (!empty($CFG->messagingallowemailoverride)) {
         $inputattributes = array('size' => '30', 'name' => 'email_email', 'value' => $preferences->email_email, 'id' => 'email_email');
         $string .= html_writer::label(get_string('email', 'message_email'), 'email_email');
         $string .= $OUTPUT->container(html_writer::empty_tag('input', $inputattributes));
         if (empty($preferences->email_email) && !empty($preferences->userdefaultemail)) {
             $string .= $OUTPUT->container(get_string('ifemailleftempty', 'message_email', $preferences->userdefaultemail));
         }
         if (!empty($preferences->email_email) && !validate_email($preferences->email_email)) {
             $string .= $OUTPUT->container(get_string('invalidemail'), 'error');
         }
         $string .= '<br/>';
     }
     return $string;
 }

//.........这里部分代码省略.........
    }
    $mail->Subject = substr($subject, 0, 900);
    $temprecipients[] = array($user->email, fullname($user));
    // Set word wrap.
    $mail->WordWrap = $wordwrapwidth;
    if (!empty($from->customheaders)) {
        // Add custom headers.
        if (is_array($from->customheaders)) {
            foreach ($from->customheaders as $customheader) {
                $mail->addCustomHeader($customheader);
            }
        } else {
            $mail->addCustomHeader($from->customheaders);
        }
    }
    if (!empty($from->priority)) {
        $mail->Priority = $from->priority;
    }
    if ($messagehtml && !empty($user->mailformat) && $user->mailformat == 1) {
        // Don't ever send HTML to users who don't want it.
        $mail->isHTML(true);
        $mail->Encoding = 'quoted-printable';
        $mail->Body = $messagehtml;
        $mail->AltBody = "\n{$messagetext}\n";
    } else {
        $mail->IsHTML(false);
        $mail->Body = "\n{$messagetext}\n";
    }
    if ($attachment && $attachname) {
        if (preg_match("~\\.\\.~", $attachment)) {
            // Security check for ".." in dir path.
            $temprecipients[] = array($supportuser->email, fullname($supportuser, true));
            $mail->addStringAttachment('Error in attachment.  User attempted to attach a filename with a unsafe name.', 'error.txt', '8bit', 'text/plain');
        } else {
            require_once $CFG->libdir . '/filelib.php';
            $mimetype = mimeinfo('type', $attachname);
            $attachmentpath = $attachment;
            // Before doing the comparison, make sure that the paths are correct (Windows uses slashes in the other direction).
            $attachpath = str_replace('\\', '/', $attachmentpath);
            // Make sure both variables are normalised before comparing.
            $temppath = str_replace('\\', '/', $CFG->tempdir);
            // If the attachment is a full path to a file in the tempdir, use it as is,
            // otherwise assume it is a relative path from the dataroot (for backwards compatibility reasons).
            if (strpos($attachpath, realpath($temppath)) !== 0) {
                $attachmentpath = $CFG->dataroot . '/' . $attachmentpath;
            }
            $mail->addAttachment($attachmentpath, $attachname, 'base64', $mimetype);
        }
    }
    // Check if the email should be sent in an other charset then the default UTF-8.
    if (!empty($CFG->sitemailcharset) || !empty($CFG->allowusermailcharset)) {
        // Use the defined site mail charset or eventually the one preferred by the recipient.
        $charset = $CFG->sitemailcharset;
        if (!empty($CFG->allowusermailcharset)) {
            if ($useremailcharset = get_user_preferences('mailcharset', '0', $user->id)) {
                $charset = $useremailcharset;
            }
        }
        // Convert all the necessary strings if the charset is supported.
        $charsets = get_list_of_charsets();
        unset($charsets['UTF-8']);
        if (in_array($charset, $charsets)) {
            $mail->CharSet = $charset;
            $mail->FromName = core_text::convert($mail->FromName, 'utf-8', strtolower($charset));
            $mail->Subject = core_text::convert($mail->Subject, 'utf-8', strtolower($charset));
            $mail->Body = core_text::convert($mail->Body, 'utf-8', strtolower($charset));
            $mail->AltBody = core_text::convert($mail->AltBody, 'utf-8', strtolower($charset));
            foreach ($temprecipients as $key => $values) {
                $temprecipients[$key][1] = core_text::convert($values[1], 'utf-8', strtolower($charset));
            }
            foreach ($tempreplyto as $key => $values) {
                $tempreplyto[$key][1] = core_text::convert($values[1], 'utf-8', strtolower($charset));
            }
        }
    }
    foreach ($temprecipients as $values) {
        $mail->addAddress($values[0], $values[1]);
    }
    foreach ($tempreplyto as $values) {
        $mail->addReplyTo($values[0], $values[1]);
    }
    if ($mail->send()) {
        set_send_count($user);
        if (!empty($mail->SMTPDebug)) {
            echo '</pre>';
        }
        return true;
    } else {
        // Trigger event for failing to send email.
        $event = \core\event\email_failed::create(array('context' => context_system::instance(), 'userid' => $from->id, 'relateduserid' => $user->id, 'other' => array('subject' => $subject, 'message' => $messagetext, 'errorinfo' => $mail->ErrorInfo)));
        $event->trigger();
        if (CLI_SCRIPT) {
            mtrace('Error: lib/moodlelib.php email_to_user(): ' . $mail->ErrorInfo);
        }
        if (!empty($mail->SMTPDebug)) {
            echo '</pre>';
        }
        return false;
    }
}

//.........这里部分代码省略.........
        } else {
            $mail->From = $CFG->noreplyaddress;
            $mail->FromName = fullname($from);
            if (empty($replyto)) {
                $tempreplyto[] = array($CFG->noreplyaddress, get_string('noreplyname'));
            }
        }
    }
    if (!empty($replyto)) {
        $tempreplyto[] = array($replyto, $replytoname);
    }
    $mail->Subject = substr($subject, 0, 900);
    $temprecipients[] = array($user->email, fullname($user));
    $mail->WordWrap = $wordwrapwidth;
    // set word wrap
    if (!empty($from->customheaders)) {
        // Add custom headers
        if (is_array($from->customheaders)) {
            foreach ($from->customheaders as $customheader) {
                $mail->AddCustomHeader($customheader);
            }
        } else {
            $mail->AddCustomHeader($from->customheaders);
        }
    }
    if (!empty($from->priority)) {
        $mail->Priority = $from->priority;
    }
    if ($messagehtml && !empty($user->mailformat) && $user->mailformat == 1) {
        // Don't ever send HTML to users who don't want it
        $mail->IsHTML(true);
        $mail->Encoding = 'quoted-printable';
        // Encoding to use
        $mail->Body = $messagehtml;
        $mail->AltBody = "\n{$messagetext}\n";
    } else {
        $mail->IsHTML(false);
        $mail->Body = "\n{$messagetext}\n";
    }
    if ($attachment && $attachname) {
        if (preg_match("~\\.\\.~", $attachment)) {
            // Security check for ".." in dir path
            $temprecipients[] = array($supportuser->email, fullname($supportuser, true));
            $mail->AddStringAttachment('Error in attachment.  User attempted to attach a filename with a unsafe name.', 'error.txt', '8bit', 'text/plain');
        } else {
            require_once $CFG->libdir . '/filelib.php';
            $mimetype = mimeinfo('type', $attachname);
            $mail->AddAttachment($CFG->dataroot . '/' . $attachment, $attachname, 'base64', $mimetype);
        }
    }
    // Check if the email should be sent in an other charset then the default UTF-8
    if (!empty($CFG->sitemailcharset) || !empty($CFG->allowusermailcharset)) {
        // use the defined site mail charset or eventually the one preferred by the recipient
        $charset = $CFG->sitemailcharset;
        if (!empty($CFG->allowusermailcharset)) {
            if ($useremailcharset = get_user_preferences('mailcharset', '0', $user->id)) {
                $charset = $useremailcharset;
            }
        }
        // convert all the necessary strings if the charset is supported
        $charsets = get_list_of_charsets();
        unset($charsets['UTF-8']);
        if (in_array($charset, $charsets)) {
            $textlib = textlib_get_instance();
            $mail->CharSet = $charset;
            $mail->FromName = $textlib->convert($mail->FromName, 'utf-8', strtolower($charset));
            $mail->Subject = $textlib->convert($mail->Subject, 'utf-8', strtolower($charset));
            $mail->Body = $textlib->convert($mail->Body, 'utf-8', strtolower($charset));
            $mail->AltBody = $textlib->convert($mail->AltBody, 'utf-8', strtolower($charset));
            foreach ($temprecipients as $key => $values) {
                $temprecipients[$key][1] = $textlib->convert($values[1], 'utf-8', strtolower($charset));
            }
            foreach ($tempreplyto as $key => $values) {
                $tempreplyto[$key][1] = $textlib->convert($values[1], 'utf-8', strtolower($charset));
            }
        }
    }
    foreach ($temprecipients as $values) {
        $mail->AddAddress($values[0], $values[1]);
    }
    foreach ($tempreplyto as $values) {
        $mail->AddReplyTo($values[0], $values[1]);
    }
    if ($mail->Send()) {
        set_send_count($user);
        $mail->IsSMTP();
        // use SMTP directly
        if (!empty($mail->SMTPDebug)) {
            echo '</pre>';
        }
        return true;
    } else {
        mtrace('ERROR: ' . $mail->ErrorInfo);
        add_to_log(SITEID, 'library', 'mailer', $FULLME, 'ERROR: ' . $mail->ErrorInfo);
        if (!empty($mail->SMTPDebug)) {
            echo '</pre>';
        }
        return false;
    }
}

//.........这里部分代码省略.........
            if (empty($replyto)) {
                $mail->AddReplyTo($CFG->noreplyaddress, get_string('noreplyname'));
            }
        }
    }
    if (!empty($replyto)) {
        $mail->AddReplyTo($replyto, $replytoname);
    }
    $mail->Subject = substr(stripslashes($subject), 0, 900);
    $mail->AddAddress(stripslashes($user->email), fullname($user));
    $mail->WordWrap = $wordwrapwidth;
    // set word wrap
    if (!empty($from->customheaders)) {
        // Add custom headers
        if (is_array($from->customheaders)) {
            foreach ($from->customheaders as $customheader) {
                $mail->AddCustomHeader($customheader);
            }
        } else {
            $mail->AddCustomHeader($from->customheaders);
        }
    }
    if (!empty($from->priority)) {
        $mail->Priority = $from->priority;
    }
    if ($messagehtml && $user->mailformat == 1) {
        // Don't ever send HTML to users who don't want it
        $mail->IsHTML(true);
        $mail->Encoding = 'quoted-printable';
        // Encoding to use
        $mail->Body = $messagehtml;
        $mail->AltBody = "\n{$messagetext}\n";
    } else {
        $mail->IsHTML(false);
        $mail->Body = "\n{$messagetext}\n";
    }
    if ($attachment && $attachname) {
        if (ereg("\\.\\.", $attachment)) {
            // Security check for ".." in dir path
            $mail->AddAddress($supportuser->email, fullname($supportuser, true));
            $mail->AddStringAttachment('Error in attachment.  User attempted to attach a filename with a unsafe name.', 'error.txt', '8bit', 'text/plain');
        } else {
            require_once $CFG->libdir . '/filelib.php';
            $mimetype = mimeinfo('type', $attachname);
            $mail->AddAttachment($CFG->dataroot . '/' . $attachment, $attachname, 'base64', $mimetype);
        }
    }
    /// If we are running under Unicode and sitemailcharset or allowusermailcharset are set, convert the email
    /// encoding to the specified one
    if (!empty($CFG->sitemailcharset) || !empty($CFG->allowusermailcharset)) {
        /// Set it to site mail charset
        $charset = $CFG->sitemailcharset;
        /// Overwrite it with the user mail charset
        if (!empty($CFG->allowusermailcharset)) {
            if ($useremailcharset = get_user_preferences('mailcharset', '0', $user->id)) {
                $charset = $useremailcharset;
            }
        }
        /// If it has changed, convert all the necessary strings
        $charsets = get_list_of_charsets();
        unset($charsets['UTF-8']);
        if (in_array($charset, $charsets)) {
            /// Save the new mail charset
            $mail->CharSet = $charset;
            /// And convert some strings
            $mail->FromName = $textlib->convert($mail->FromName, 'utf-8', $mail->CharSet);
            //From Name
            foreach ($mail->ReplyTo as $key => $rt) {
                //ReplyTo Names
                $mail->ReplyTo[$key][1] = $textlib->convert($rt[1], 'utf-8', $mail->CharSet);
            }
            $mail->Subject = $textlib->convert($mail->Subject, 'utf-8', $mail->CharSet);
            //Subject
            foreach ($mail->to as $key => $to) {
                $mail->to[$key][1] = $textlib->convert($to[1], 'utf-8', $mail->CharSet);
                //To Names
            }
            $mail->Body = $textlib->convert($mail->Body, 'utf-8', $mail->CharSet);
            //Body
            $mail->AltBody = $textlib->convert($mail->AltBody, 'utf-8', $mail->CharSet);
            //Subject
        }
    }
    if ($mail->Send()) {
        set_send_count($user);
        $mail->IsSMTP();
        // use SMTP directly
        if (!empty($mail->SMTPDebug)) {
            echo '</pre>';
        }
        return true;
    } else {
        mtrace('ERROR: ' . $mail->ErrorInfo);
        add_to_log(SITEID, 'library', 'mailer', $FULLME, 'ERROR: ' . $mail->ErrorInfo);
        if (!empty($mail->SMTPDebug)) {
            echo '</pre>';
        }
        return false;
    }
}

function useredit_shared_definition(&$mform, $editoroptions = null, $filemanageroptions = null)
{
    global $CFG, $USER, $DB;
    $user = $DB->get_record('user', array('id' => $USER->id));
    useredit_load_preferences($user, false);
    $strrequired = get_string('required');
    // Add the necessary names.
    foreach (useredit_get_required_name_fields() as $fullname) {
        $mform->addElement('text', $fullname, get_string($fullname), 'maxlength="100" size="30"');
        $mform->addRule($fullname, $strrequired, 'required', null, 'client');
        $mform->setType($fullname, PARAM_NOTAGS);
    }
    $enabledusernamefields = useredit_get_enabled_name_fields();
    // Add the enabled additional name fields.
    foreach ($enabledusernamefields as $addname) {
        $mform->addElement('text', $addname, get_string($addname), 'maxlength="100" size="30"');
        $mform->setType($addname, PARAM_NOTAGS);
    }
    // Do not show email field if change confirmation is pending
    if (!empty($CFG->emailchangeconfirmation) and !empty($user->preference_newemail)) {
        $notice = get_string('emailchangepending', 'auth', $user);
        $notice .= '<br /><a href="edit.php?cancelemailchange=1&amp;id=' . $user->id . '">' . get_string('emailchangecancel', 'auth') . '</a>';
        $mform->addElement('static', 'emailpending', get_string('email'), $notice);
    } else {
        $mform->addElement('text', 'email', get_string('email'), 'maxlength="100" size="30"');
        $mform->addRule('email', $strrequired, 'required', null, 'client');
        $mform->setType('email', PARAM_EMAIL);
    }
    $choices = array();
    $choices['0'] = get_string('emaildisplayno');
    $choices['1'] = get_string('emaildisplayyes');
    $choices['2'] = get_string('emaildisplaycourse');
    $mform->addElement('select', 'maildisplay', get_string('emaildisplay'), $choices);
    $mform->setDefault('maildisplay', 2);
    $choices = array();
    $choices['0'] = get_string('textformat');
    $choices['1'] = get_string('htmlformat');
    $mform->addElement('select', 'mailformat', get_string('emailformat'), $choices);
    $mform->setDefault('mailformat', 1);
    if (!empty($CFG->allowusermailcharset)) {
        $choices = array();
        $charsets = get_list_of_charsets();
        if (!empty($CFG->sitemailcharset)) {
            $choices['0'] = get_string('site') . ' (' . $CFG->sitemailcharset . ')';
        } else {
            $choices['0'] = get_string('site') . ' (UTF-8)';
        }
        $choices = array_merge($choices, $charsets);
        $mform->addElement('select', 'preference_mailcharset', get_string('emailcharset'), $choices);
    }
    $choices = array();
    $choices['0'] = get_string('emaildigestoff');
    $choices['1'] = get_string('emaildigestcomplete');
    $choices['2'] = get_string('emaildigestsubjects');
    $mform->addElement('select', 'maildigest', get_string('emaildigest'), $choices);
    $mform->setDefault('maildigest', 0);
    $mform->addHelpButton('maildigest', 'emaildigest');
    $choices = array();
    $choices['1'] = get_string('autosubscribeyes');
    $choices['0'] = get_string('autosubscribeno');
    $mform->addElement('select', 'autosubscribe', get_string('autosubscribe'), $choices);
    $mform->setDefault('autosubscribe', 1);
    if (!empty($CFG->forum_trackreadposts)) {
        $choices = array();
        $choices['0'] = get_string('trackforumsno');
        $choices['1'] = get_string('trackforumsyes');
        $mform->addElement('select', 'trackforums', get_string('trackforums'), $choices);
        $mform->setDefault('trackforums', 0);
    }
    $editors = editors_get_enabled();
    if (count($editors) > 1) {
        $choices = array('' => get_string('defaulteditor'));
        $firsteditor = '';
        foreach (array_keys($editors) as $editor) {
            if (!$firsteditor) {
                $firsteditor = $editor;
            }
            $choices[$editor] = get_string('pluginname', 'editor_' . $editor);
        }
        $mform->addElement('select', 'preference_htmleditor', get_string('textediting'), $choices);
        $mform->setDefault('preference_htmleditor', '');
    } else {
        // Empty string means use the first chosen text editor.
        $mform->addElement('hidden', 'preference_htmleditor');
        $mform->setDefault('preference_htmleditor', '');
        $mform->setType('preference_htmleditor', PARAM_PLUGIN);
    }
    $mform->addElement('text', 'city', get_string('city'), 'maxlength="120" size="21"');
    $mform->setType('city', PARAM_TEXT);
    if (!empty($CFG->defaultcity)) {
        $mform->setDefault('city', $CFG->defaultcity);
    }
    $choices = get_string_manager()->get_list_of_countries();
    $choices = array('' => get_string('selectacountry') . '...') + $choices;
    $mform->addElement('select', 'country', get_string('selectacountry'), $choices);
    if (!empty($CFG->country)) {
        $mform->setDefault('country', $CFG->country);
    }
    $choices = get_list_of_timezones();
    $choices['99'] = get_string('serverlocaltime');
//.........这里部分代码省略.........

function useredit_shared_definition(&$mform)
{
    global $CFG, $USER;
    $user = get_record('user', 'id', $USER->id);
    useredit_load_preferences($user, false);
    $strrequired = get_string('required');
    $nameordercheck = new object();
    $nameordercheck->firstname = 'a';
    $nameordercheck->lastname = 'b';
    if (fullname($nameordercheck) == 'b a') {
        // See MDL-4325
        $mform->addElement('text', 'lastname', get_string('lastname'), 'maxlength="100" size="30"');
        $mform->addElement('text', 'firstname', get_string('firstname'), 'maxlength="100" size="30"');
    } else {
        $mform->addElement('text', 'firstname', get_string('firstname'), 'maxlength="100" size="30"');
        $mform->addElement('text', 'lastname', get_string('lastname'), 'maxlength="100" size="30"');
    }
    $mform->addRule('firstname', $strrequired, 'required', null, 'client');
    $mform->setType('firstname', PARAM_NOTAGS);
    $mform->addRule('lastname', $strrequired, 'required', null, 'client');
    $mform->setType('lastname', PARAM_NOTAGS);
    // Do not show email field if change confirmation is pending
    if ($CFG->emailchangeconfirmation && !empty($user->preference_newemail)) {
        $notice = get_string('auth_emailchangepending', 'auth', $user);
        $notice .= '<br /><a href="edit.php?cancelemailchange=1&amp;id=' . $user->id . '">' . get_string('auth_emailchangecancel', 'auth') . '</a>';
        $mform->addElement('static', 'emailpending', get_string('email'), $notice);
    } else {
        $mform->addElement('text', 'email', get_string('email'), 'maxlength="100" size="30"');
        $mform->addRule('email', $strrequired, 'required', null, 'client');
    }
    $choices = array();
    $choices['0'] = get_string('emaildisplayno');
    $choices['1'] = get_string('emaildisplayyes');
    $choices['2'] = get_string('emaildisplaycourse');
    $mform->addElement('select', 'maildisplay', get_string('emaildisplay'), $choices);
    $mform->setDefault('maildisplay', 2);
    $choices = array();
    $choices['0'] = get_string('emailenable');
    $choices['1'] = get_string('emaildisable');
    $mform->addElement('select', 'emailstop', get_string('emailactive'), $choices);
    $mform->setDefault('emailenable', 1);
    $choices = array();
    $choices['0'] = get_string('textformat');
    $choices['1'] = get_string('htmlformat');
    $mform->addElement('select', 'mailformat', get_string('emailformat'), $choices);
    $mform->setDefault('mailformat', 1);
    $mform->setAdvanced('mailformat');
    if (!empty($CFG->allowusermailcharset)) {
        $choices = array();
        $charsets = get_list_of_charsets();
        if (!empty($CFG->sitemailcharset)) {
            $choices['0'] = get_string('site') . ' (' . $CFG->sitemailcharset . ')';
        } else {
            $choices['0'] = get_string('site') . ' (UTF-8)';
        }
        $choices = array_merge($choices, $charsets);
        $mform->addElement('select', 'preference_mailcharset', get_string('emailcharset'), $choices);
        $mform->setAdvanced('preference_mailcharset');
    }
    $choices = array();
    $choices['0'] = get_string('emaildigestoff');
    $choices['1'] = get_string('emaildigestcomplete');
    $choices['2'] = get_string('emaildigestsubjects');
    $mform->addElement('select', 'maildigest', get_string('emaildigest'), $choices);
    $mform->setDefault('maildigest', 0);
    $mform->setAdvanced('maildigest');
    $choices = array();
    $choices['1'] = get_string('autosubscribeyes');
    $choices['0'] = get_string('autosubscribeno');
    $mform->addElement('select', 'autosubscribe', get_string('autosubscribe'), $choices);
    $mform->setDefault('autosubscribe', 1);
    $mform->setAdvanced('autosubscribe');
    if (!empty($CFG->forum_trackreadposts)) {
        $choices = array();
        $choices['0'] = get_string('trackforumsno');
        $choices['1'] = get_string('trackforumsyes');
        $mform->addElement('select', 'trackforums', get_string('trackforums'), $choices);
        $mform->setDefault('trackforums', 0);
        $mform->setAdvanced('trackforums');
    }
    if ($CFG->htmleditor) {
        $choices = array();
        $choices['0'] = get_string('texteditor');
        $choices['1'] = get_string('htmleditor');
        $mform->addElement('select', 'htmleditor', get_string('textediting'), $choices);
        $mform->setDefault('htmleditor', 1);
        $mform->setAdvanced('htmleditor');
    }
    if (empty($CFG->enableajax)) {
        $mform->addElement('static', 'ajaxdisabled', get_string('ajaxuse'), get_string('ajaxno'));
        $mform->setAdvanced('ajaxdisabled');
    } else {
        $choices = array();
        $choices['0'] = get_string('ajaxno');
        $choices['1'] = get_string('ajaxyes');
        $mform->addElement('select', 'ajax', get_string('ajaxuse'), $choices);
        $mform->setDefault('ajax', 0);
        $mform->setAdvanced('ajax');
    }
    $choices = array();
//.........这里部分代码省略.........

// TODO: add path validation
$temp->add(new admin_setting_configtext('pathtodu', get_string('pathtodu', 'admin'), get_string('configpathtodu', 'admin'), '', PARAM_RAW));
// TODO: add path validation
$temp->add(new admin_setting_configtext('aspellpath', get_string('aspellpath', 'admin'), get_string('edhelpaspellpath'), '', PARAM_RAW));
// TODO: add path validation
$ADMIN->add('server', $temp, 0);
// "email" settingpage
$temp = new admin_settingpage('mail', get_string('mail', 'admin'));
$temp->add(new admin_setting_configtext('smtphosts', get_string('smtphosts', 'admin'), get_string('configsmtphosts', 'admin'), '', PARAM_HOST));
$temp->add(new admin_setting_configtext('smtpuser', get_string('smtpuser', 'admin'), get_string('configsmtpuser', 'admin'), '', PARAM_NOTAGS));
$temp->add(new admin_setting_configpasswordunmask('smtppass', get_string('smtppass', 'admin'), get_string('configsmtpuser', 'admin'), '', PARAM_RAW));
$temp->add(new admin_setting_configtext('noreplyaddress', get_string('noreplyaddress', 'admin'), get_string('confignoreplyaddress', 'admin'), 'noreply@' . $_SERVER['HTTP_HOST'], PARAM_NOTAGS));
$temp->add(new admin_setting_configtext('allowemailaddresses', get_string('allowemailaddresses', 'admin'), get_string('configallowemailaddresses', 'admin'), '', PARAM_NOTAGS));
$temp->add(new admin_setting_configtext('denyemailaddresses', get_string('denyemailaddresses', 'admin'), get_string('configdenyemailaddresses', 'admin'), '', PARAM_NOTAGS));
$temp->add(new admin_setting_configselect('digestmailtime', get_string('digestmailtime', 'admin'), get_string('configdigestmailtime', 'admin'), 17, array('00' => '00', '01' => '01', '02' => '02', '03' => '03', '04' => '04', '05' => '05', '06' => '06', '07' => '07', '08' => '08', '09' => '09', '10' => '10', '11' => '11', '12' => '12', '13' => '13', '14' => '14', '15' => '15', '16' => '16', '17' => '17', '18' => '18', '19' => '19', '20' => '20', '21' => '21', '22' => '22', '23' => '23')));
$charsets = get_list_of_charsets();
unset($charsets['UTF-8']);
// not needed here
$options = array();
$options['0'] = get_string('none');
$options = array_merge($options, $charsets);
$temp->add(new admin_setting_configselect('sitemailcharset', get_string('sitemailcharset', 'admin'), get_string('configsitemailcharset', 'admin'), '', $options));
$temp->add(new admin_setting_configcheckbox('allowusermailcharset', get_string('allowusermailcharset', 'admin'), get_string('configallowusermailcharset', 'admin'), 0));
if (isloggedin()) {
    global $USER;
    $primaryadminemail = $USER->email;
    $primaryadminname = fullname($USER, true);
} else {
    // no defaults during installation - admin user must be created first
    $primaryadminemail = NULL;
    $primaryadminname = NULL;

/**
 * Adds user preferences elements to user edit form.
 *
 * @param stdClass $user
 * @param moodleform $mform
 * @param array|null $editoroptions
 * @param array|null $filemanageroptions
 */
function useredit_shared_definition_preferences($user, &$mform, $editoroptions = null, $filemanageroptions = null)
{
    global $CFG;
    $choices = array();
    $choices['0'] = get_string('emaildisplayno');
    $choices['1'] = get_string('emaildisplayyes');
    $choices['2'] = get_string('emaildisplaycourse');
    $mform->addElement('select', 'maildisplay', get_string('emaildisplay'), $choices);
    $mform->setDefault('maildisplay', $CFG->defaultpreference_maildisplay);
    $choices = array();
    $choices['0'] = get_string('textformat');
    $choices['1'] = get_string('htmlformat');
    $mform->addElement('select', 'mailformat', get_string('emailformat'), $choices);
    $mform->setDefault('mailformat', $CFG->defaultpreference_mailformat);
    if (!empty($CFG->allowusermailcharset)) {
        $choices = array();
        $charsets = get_list_of_charsets();
        if (!empty($CFG->sitemailcharset)) {
            $choices['0'] = get_string('site') . ' (' . $CFG->sitemailcharset . ')';
        } else {
            $choices['0'] = get_string('site') . ' (UTF-8)';
        }
        $choices = array_merge($choices, $charsets);
        $mform->addElement('select', 'preference_mailcharset', get_string('emailcharset'), $choices);
    }
    $choices = array();
    $choices['0'] = get_string('emaildigestoff');
    $choices['1'] = get_string('emaildigestcomplete');
    $choices['2'] = get_string('emaildigestsubjects');
    $mform->addElement('select', 'maildigest', get_string('emaildigest'), $choices);
    $mform->setDefault('maildigest', $CFG->defaultpreference_maildigest);
    $mform->addHelpButton('maildigest', 'emaildigest');
    $choices = array();
    $choices['1'] = get_string('autosubscribeyes');
    $choices['0'] = get_string('autosubscribeno');
    $mform->addElement('select', 'autosubscribe', get_string('autosubscribe'), $choices);
    $mform->setDefault('autosubscribe', $CFG->defaultpreference_autosubscribe);
    if (!empty($CFG->forum_trackreadposts)) {
        $choices = array();
        $choices['0'] = get_string('trackforumsno');
        $choices['1'] = get_string('trackforumsyes');
        $mform->addElement('select', 'trackforums', get_string('trackforums'), $choices);
        $mform->setDefault('trackforums', $CFG->defaultpreference_trackforums);
    }
    $editors = editors_get_enabled();
    if (count($editors) > 1) {
        $choices = array('' => get_string('defaulteditor'));
        $firsteditor = '';
        foreach (array_keys($editors) as $editor) {
            if (!$firsteditor) {
                $firsteditor = $editor;
            }
            $choices[$editor] = get_string('pluginname', 'editor_' . $editor);
        }
        $mform->addElement('select', 'preference_htmleditor', get_string('textediting'), $choices);
        $mform->setDefault('preference_htmleditor', '');
    } else {
        // Empty string means use the first chosen text editor.
        $mform->addElement('hidden', 'preference_htmleditor');
        $mform->setDefault('preference_htmleditor', '');
        $mform->setType('preference_htmleditor', PARAM_PLUGIN);
    }
    $mform->addElement('select', 'lang', get_string('preferredlanguage'), get_string_manager()->get_list_of_translations());
    $mform->setDefault('lang', $CFG->lang);
}

//.........这里部分代码省略.........
            if (empty($replyto)) {
                $mail->AddReplyTo($CFG->noreplyaddress, get_string('noreplyname'));
            }
        }
    }
    if (!empty($replyto)) {
        $mail->AddReplyTo($replyto, $replytoname);
    }
    $mail->Subject = substr(stripslashes($subject), 0, 900);
    $mail->AddAddress($user->email, fullname($user));
    $mail->WordWrap = 79;
    // set word wrap
    if (!empty($from->customheaders)) {
        // Add custom headers
        if (is_array($from->customheaders)) {
            foreach ($from->customheaders as $customheader) {
                $mail->AddCustomHeader($customheader);
            }
        } else {
            $mail->AddCustomHeader($from->customheaders);
        }
    }
    if (!empty($from->priority)) {
        $mail->Priority = $from->priority;
    }
    if ($messagehtml && $user->mailformat == 1) {
        // Don't ever send HTML to users who don't want it
        $mail->IsHTML(true);
        $mail->Encoding = 'quoted-printable';
        // Encoding to use
        $mail->Body = $messagehtml;
        $mail->AltBody = "\n{$messagetext}\n";
    } else {
        $mail->IsHTML(false);
        $mail->Body = "\n{$messagetext}\n";
    }
    if ($attachment && $attachname) {
        if (ereg("\\.\\.", $attachment)) {
            // Security check for ".." in dir path
            $mail->AddAddress($supportuser->email, fullname($supportuser, true));
            $mail->AddStringAttachment('Error in attachment.  User attempted to attach a filename with a unsafe name.', 'error.txt', '8bit', 'text/plain');
        } else {
            require_once $CFG->libdir . '/filelib.php';
            $mimetype = mimeinfo('type', $attachname);
            $mail->AddAttachment($CFG->dataroot . '/' . $attachment, $attachname, 'base64', $mimetype);
        }
    }
    /// If we are running under Unicode and sitemailcharset or allowusermailcharset are set, convert the email
    /// encoding to the specified one
    if (!empty($CFG->sitemailcharset) || !empty($CFG->allowusermailcharset)) {
        /// Set it to site mail charset
        $charset = $CFG->sitemailcharset;
        /// Overwrite it with the user mail charset
        if (!empty($CFG->allowusermailcharset)) {
            if ($useremailcharset = get_user_preferences('mailcharset', '0', $user->id)) {
                $charset = $useremailcharset;
            }
        }
        /// If it has changed, convert all the necessary strings
        $charsets = get_list_of_charsets();
        unset($charsets['UTF-8']);
        if (in_array($charset, $charsets)) {
            /// Save the new mail charset
            $mail->CharSet = $charset;
            /// And convert some strings
            $mail->FromName = $textlib->convert($mail->FromName, 'utf-8', $mail->CharSet);
            //From Name
            foreach ($mail->ReplyTo as $key => $rt) {
                //ReplyTo Names
                $mail->ReplyTo[$key][1] = $textlib->convert($rt, 'utf-8', $mail->CharSet);
            }
            $mail->Subject = $textlib->convert($mail->Subject, 'utf-8', $mail->CharSet);
            //Subject
            foreach ($mail->to as $key => $to) {
                $mail->to[$key][1] = $textlib->convert($to, 'utf-8', $mail->CharSet);
                //To Names
            }
            $mail->Body = $textlib->convert($mail->Body, 'utf-8', $mail->CharSet);
            //Body
            $mail->AltBody = $textlib->convert($mail->AltBody, 'utf-8', $mail->CharSet);
            //Subject
        }
    }
    if ($mail->Send()) {
        set_send_count($user);
        $mail->IsSMTP();
        // use SMTP directly
        if (!empty($CFG->debugsmtp)) {
            echo '</pre>';
        }
        return true;
    } else {
        mtrace('ERROR: ' . $mail->ErrorInfo);
        add_to_log(SITEID, 'library', 'mailer', $FULLME, 'ERROR: ' . $mail->ErrorInfo);
        if (!empty($CFG->debugsmtp)) {
            echo '</pre>';
        }
        return false;
    }
}