function fetch_remote_file($url, $post)
{
    global $url_remap;
    // extract the file name and extension from the url
    $file_name = basename($url);
    // get placeholder file in the upload dir with a unique, sanitized filename
    $upload = wp_upload_bits($file_name, 0, '', $post['upload_date']);
    if ($upload['error']) {
        return new WP_Error('upload_dir_error', $upload['error']);
    }
    // fetch the remote url and write it to the placeholder file
    $headers = wp_get_http($url, $upload['file']);
    // request failed
    if (!$headers) {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', __('Remote server did not respond', 'wordpress-importer'));
    }
    // make sure the fetch was successful
    if ($headers['response'] != '200') {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', sprintf(__('Remote server returned error response %1$d %2$s', 'wordpress-importer'), esc_html($headers['response']), get_status_header_desc($headers['response'])));
    }
    $filesize = filesize($upload['file']);
    if (isset($headers['content-length']) && $filesize != $headers['content-length']) {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', __('Remote file is incorrect size', 'wordpress-importer'));
    }
    if (0 == $filesize) {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', __('Zero size file downloaded', 'wordpress-importer'));
    }
    // keep track of the old and new urls so we can substitute them later
    $url_remap[$url] = $upload['url'];
    return $upload;
}

 function get_contents($url)
 {
     if (substr($url, 0, 5) == 'http:') {
         return wp_get_http($url);
     }
     return file_get_contents($url);
 }

 function test_get_redirect_limit_exceeded()
 {
     // this will redirect to asdftestblog1.files.wordpress.com
     $url = 'http://asdftestblog1.wordpress.com/files/2007/09/2007-06-30-dsc_4700-1.jpg';
     $file = tempnam('/tmp', 'testfile');
     // pretend we've already redirected 5 times
     $headers = wp_get_http($url, $file, 6);
     $this->assertFalse($headers);
 }

 /**
  *
  * @param unknown_type $url
  */
 private function getImageFromRemote($url)
 {
     // check for http in url
     if (substr_count($url, 'http') == 0) {
         $url = $this->host_name . $url;
     }
     // extract the file name and extension from the url
     $file_name = basename($url);
     // get placeholder file in the upload dir with a unique, sanitized filename
     // $upload = wp_upload_bits( $file_name, 0, '', $post['upload_date'] );
     $upload = wp_upload_bits($file_name, 0, '');
     if ($upload['error']) {
         return new WP_Error('upload_dir_error', $upload['error']);
     }
     // fetch the remote url and write it to the placeholder file
     $headers = wp_get_http($url, $upload['file']);
     // request failed
     if (!$headers) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', __('Remote server did not respond', 'wordpress-importer'));
     }
     // make sure the fetch was successful
     if ($headers['response'] != '200') {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', sprintf(__('Remote server returned error response %1$d %2$s', 'wordpress-importer'), esc_html($headers['response']), get_status_header_desc($headers['response'])));
     }
     $filesize = filesize($upload['file']);
     if (isset($headers['content-length']) && $filesize != $headers['content-length']) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', __('Remote file is incorrect size', 'wordpress-importer'));
     }
     if (0 == $filesize) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', __('Zero size file downloaded', 'wordpress-importer'));
     }
     return $upload;
 }

/**
 * Move Images from a remote url to upload directory.
 *
 * @since 1.0.0
 * @package GeoDirectory
 * @param string $url The remote image url.
 * @return array|WP_Error The uploaded data as array. When failure returns error.
 */
function fetch_remote_file($url)
{
    // extract the file name and extension from the url
    require_once ABSPATH . 'wp-includes/pluggable.php';
    $file_name = basename($url);
    if (strpos($file_name, '?') !== false) {
        list($file_name) = explode('?', $file_name);
    }
    // get placeholder file in the upload dir with a unique, sanitized filename
    $post_upload_date = isset($post['upload_date']) ? $post['upload_date'] : '';
    $upload = wp_upload_bits($file_name, 0, '', $post_upload_date);
    if ($upload['error']) {
        return new WP_Error('upload_dir_error', $upload['error']);
    }
    // fetch the remote url and write it to the placeholder file
    $headers = wp_get_http($url, $upload['file']);
    // request failed
    if (!$headers) {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', __('Remote server did not respond', 'geodirectory'));
    }
    // make sure the fetch was successful
    if ($headers['response'] != '200') {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', sprintf(__('Remote server returned error response %1$d %2$s', 'geodirectory'), esc_html($headers['response']), get_status_header_desc($headers['response'])));
    }
    $filesize = filesize($upload['file']);
    if (isset($headers['content-length']) && $filesize != $headers['content-length']) {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', __('Remote file is incorrect size', 'geodirectory'));
    }
    if (0 == $filesize) {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', __('Zero size file downloaded', 'geodirectory'));
    }
    return $upload;
}

 /**
  * Validate widget input
  * 
  * @access public
  * @return Mixed
  */
 function validate($args, $options, $preview)
 {
     extract($args);
     $output = "";
     $permalink = trim($permalink);
     if ($options['required']) {
         if (empty($permalink) || $permalink == $options['default']) {
             $output .= __('You must specify the permalink.', 'tdomf');
         }
     }
     if (!empty($permalink) && $permalink != $options['default'] && !tdomf_check_url($permalink)) {
         $output .= __('The permalink you specified seems incorrect', 'tdomf');
     } else {
         if (!$preview && $options['test'] && function_exists('wp_get_http')) {
             $headers = wp_get_http($permalink, false, 1);
             if ($headers == false) {
                 $output .= sprintf(__('The permalink doesn\'t doesnt seem to exist.', 'tdomf'), $headers["response"]);
             } else {
                 if ($headers["response"] != '200') {
                     $output .= sprintf(__('The permalink doesn\'t doesnt seem to exist. Returned %d error code.', 'tdomf'), $headers["response"]);
                 }
             }
         }
     }
     return $output;
 }

//.........这里部分代码省略.........
        $mode = tdomf_generate_default_form_mode($form_id) . '-hack';
        $curr_unmod_prev = trim(tdomf_preview_form(array('tdomf_form_id' => $form_id), $mode));
        $org_unmod_prev = trim(tdomf_get_option_form(TDOMF_OPTION_FORM_PREVIEW_HACK_ORIGINAL, $form_id));
        $hacked_prev = trim(tdomf_get_option_form(TDOMF_OPTION_FORM_PREVIEW_HACK, $form_id));
        if ($hacked_prev != false && $curr_unmod_prev != $org_unmod_prev) {
            $message .= "<font color=\"red\">";
            $diffs = "admin.php?page=tdomf_show_form_hacker&form={$form_id}&mode={$mode}&diff&form2=cur&form1=org&type=preview";
            $form_hacker = "admin.php?page=tdomf_show_form_hacker&form={$form_id}";
            $dismiss = wp_nonce_url("admin.php?page=tdomf_show_form_hacker&form={$form_id}&dismiss&type=preview", 'tdomf-form-hacker');
            $message .= sprintf(__("<b>Warning</b>: Form configuration has been changed that affect the preview output but Form Hacker has not been updated! <a href='%s'>Diff &raquo;</a> | <a href='%s'>Hack Form &raquo;</a> | <a href='%s'>Dismiss</a>", "tdomf"), $diffs, $form_hacker, $dismiss);
            $message .= "</font><br/>";
        }
        $curr_unmod_form = trim(tdomf_generate_form($form_id, $mode));
        $org_unmod_form = trim(tdomf_get_option_form(TDOMF_OPTION_FORM_HACK_ORIGINAL, $form_id));
        $hacked_form = trim(tdomf_get_option_form(TDOMF_OPTION_FORM_HACK, $form_id));
        if ($hacked_form != false && $curr_unmod_form != $org_unmod_form) {
            $message .= "<font color=\"red\">";
            $diffs = "admin.php?page=tdomf_show_form_hacker&form={$form_id}&mode={$mode}&diff&form2=cur&form1=org";
            $form_hacker = "admin.php?page=tdomf_show_form_hacker&form={$form_id}";
            $dismiss = wp_nonce_url("admin.php?page=tdomf_show_form_hacker&form={$form_id}&dismiss", 'tdomf-form-hacker');
            $message .= sprintf(__("<b>Warning</b>: Form configuration has been changed that affect the generated form but Form Hacker has not been updated! <a href='%s'>Diff &raquo;</a> | <a href='%s'>Hack Form &raquo;</a> | <a href='%s'>Dismiss</a>", "tdomf"), $diffs, $form_hacker, $dismiss);
            $message .= "</font><br/>";
        }
        // widget errors
        global $tdomf_form_widgets_admin_errors;
        $mode = "new-post";
        if (tdomf_get_option_form(TDOMF_OPTION_SUBMIT_PAGE, $form_id)) {
            $mode = "new-page";
        }
        $uri = "admin.php?page=tdomf_show_form_menu&form=" . $form_id;
        do_action('tdomf_control_form_start', $form_id, $mode);
        $widget_order = tdomf_get_widget_order($form_id);
        $widgets = tdomf_filter_widgets($mode, $tdomf_form_widgets_admin_errors);
        foreach ($widget_order as $w) {
            if (isset($widgets[$w])) {
                $widget_message = call_user_func($widgets[$w]['cb'], $form_id, $widgets[$w]['params']);
                if (!empty($widget_message)) {
                    $message .= "<font color=\"red\">" . $widget_message . sprintf(__(" <a href='%s'>Fix &raquo;</a>", "tdomf"), $uri) . "</font><br/>";
                }
            }
        }
        // @todo check that key is unique in custom fields
    }
    if (get_option(TDOMF_OPTION_EXTRA_LOG_MESSAGES) && !get_option(TDOMF_OPTION_DISABLE_ERROR_MESSAGES)) {
        $message .= "<font color=\"red\">";
        if ($show_links) {
            $message .= sprintf(__("<b>Warning:</b> You have enabled 'Extra Debug Messages' and disabled 'Disable Error Messages'. This invokes a special mode where all PHP errors are turned on. This can lead to unexpected problems and could be considered a security leak! <a href=\"%s\">Change on the Options Page &raquo;</a>", "tdomf"), get_bloginfo('wpurl') . "/wp-admin/admin.php?page=tdomf_show_options_menu");
        } else {
            $message .= __("<b>Warning:</b> You have enabled 'Extra Debug Messages' and disabled 'Disable Error Messages'. This invokes a special mode where all PHP errors are turned on. This can lead to unexpected problems and could be considered a security leak! This should only be used for debugging purposes.", "tdomf");
        }
        $message .= "</font><br/>";
    }
    $create_user_link = get_bloginfo('wpurl') . "/wp-admin/admin.php?page=tdomf_show_options_menu&action=create_dummy_user";
    if (function_exists('wp_nonce_url')) {
        $create_user_link = wp_nonce_url($create_user_link, 'tdomf-create-dummy-user');
    }
    if (get_option(TDOMF_DEFAULT_AUTHOR) == false) {
        $message .= "<font color=\"red\">" . sprintf(__("<b>Error</b>: No default author set! <a href=\"%s\">Create dummy user for default author automatically &raquo;</a>", "tdomf"), $create_user_link) . "</font><br/>";
        tdomf_log_message("Option Default Author not set!", TDOMF_LOG_BAD);
    } else {
        $def_aut = new WP_User(get_option(TDOMF_DEFAULT_AUTHOR));
        if (empty($def_aut->data->ID)) {
            // User does not exist! Deleting option
            delete_option(TDOMF_DEFAULT_AUTHOR);
            $message .= "<font color=\"red\">" . sprintf(__("<b>Error</b>: Current Default Author does not exist! <a href=\"%s\">Create dummy user for default author automatically &raquo;</a>", "tdomf"), $create_user_link) . "</font><br/>";
            tdomf_log_message("Current Default Author does not exist! Deleting option.", TDOMF_LOG_BAD);
        }
        if ($def_aut->has_cap("publish_posts")) {
            $message .= "<font color=\"red\">" . sprintf(__("<b>Error</b>: Default author can publish posts. Default author should not be able to publish posts! <a href=\"%s\">Create a dummy user for default author automatically &raquo;</a>", "tdomf"), $create_user_link) . "</font><br/>";
            tdomf_log_message("Option Default Author is set to an author who can publish posts.", TDOMF_LOG_BAD);
        }
    }
    if (function_exists('wp_get_http')) {
        $post_uri = TDOMF_URLPATH . 'tdomf-form-post.php';
        $headers = wp_get_http($post_uri, false, 1);
        if ($headers != false && $headers["response"] != '200') {
            $message .= "<font color=\"red\">";
            $message .= sprintf(__("<b>Error</b>: Got a %d error when checking <a href=\"%s\">%s</a>! This will prevent posts from being submitted. The permissions may be wrong on the tdo-mini-forms folder.", "tdomf"), $headers["response"], $post_uri, $post_uri);
            $message .= "</font><br/>";
            tdomf_log_message("Did not receive a 200 response when checking {$post_uri}:<pre>" . var_export($headers, true) . "</pre>", TDOMF_LOG_ERROR);
        }
        $ajax_uri = TDOMF_URLPATH . 'tdomf-form-ajax.php';
        $headers = wp_get_http($ajax_uri, false, 1);
        if ($headers != false && $headers["response"] != '200') {
            $message .= "<font color=\"red\">";
            $message .= sprintf(__("<b>Error</b>: Got a %d error when checking <a href=\"%s\">%s</a>! This will prevent forms that use AJAX from submitting posts. The permissions may be wrong on the tdo-mini-forms folder.", "tdomf"), $headers["response"], $ajax_uri, $ajax_uri);
            $message .= "</font><br/>";
            tdomf_log_message("Did not receive a 200 response when checking {$ajax_uri}:<pre>" . var_export($headers, true) . "</pre>", TDOMF_LOG_ERROR);
        }
        $css_uri = TDOMF_URLPATH . 'tdomf-style-form.css';
        $headers = wp_get_http($css_uri, false, 1);
        if ($headers != false && $headers["response"] != '200') {
            $message .= "<font color=\"red\">";
            $message .= sprintf(__("<b>Error</b>: Got a %d error when checking <a href=\"%s\">%s</a>! This will make your forms, by default, look very ugly. The permissions may be wrong on the tdo-mini-forms folder.", "tdomf"), $headers["response"], $css_uri, $css_uri);
            $message .= "</font><br/>";
            tdomf_log_message("Did not receive a 200 response when checking {$css_uri}:<pre>" . var_export($headers, true) . "</pre>", TDOMF_LOG_ERROR);
        }
    }
    return $message;
}

/**
 * Perform a HTTP HEAD or GET request.
 *
 * If $file_path is a writable filename, this will do a GET request and write
 * the file to that path.
 *
 * @since 2.5.0
 *
 * @param string      $url       URL to fetch.
 * @param string|bool $file_path Optional. File path to write request to. Default false.
 * @param int         $red       Optional. The number of Redirects followed, Upon 5 being hit,
 *                               returns false. Default 1.
 * @return bool|string False on failure and string of headers if HEAD request.
 */
function wp_get_http($url, $file_path = false, $red = 1)
{
    @set_time_limit(60);
    if ($red > 5) {
        return false;
    }
    $options = array();
    $options['redirection'] = 5;
    if (false == $file_path) {
        $options['method'] = 'HEAD';
    } else {
        $options['method'] = 'GET';
    }
    $response = wp_safe_remote_request($url, $options);
    if (is_wp_error($response)) {
        return false;
    }
    $headers = wp_remote_retrieve_headers($response);
    $headers['response'] = wp_remote_retrieve_response_code($response);
    // WP_HTTP no longer follows redirects for HEAD requests.
    if ('HEAD' == $options['method'] && in_array($headers['response'], array(301, 302)) && isset($headers['location'])) {
        return wp_get_http($headers['location'], $file_path, ++$red);
    }
    if (false == $file_path) {
        return $headers;
    }
    // GET request - write it to the supplied filename
    $out_fp = fopen($file_path, 'w');
    if (!$out_fp) {
        return $headers;
    }
    fwrite($out_fp, wp_remote_retrieve_body($response));
    fclose($out_fp);
    clearstatcache();
    return $headers;
}

/**
 * Cache AddToAny
 */
function A2A_SHARE_SAVE_refresh_cache()
{
    $contents = wp_remote_fopen('http://www.addtoany.com/ext/updater/files_list/');
    $file_urls = explode("\n", $contents, 20);
    $upload_dir = wp_upload_dir();
    // Make directory if needed
    if (!wp_mkdir_p(dirname($upload_dir['basedir'] . '/addtoany/foo'))) {
        $message = sprintf(__('Unable to create directory %s. Is its parent directory writable by the server?'), dirname($new_file));
        return array('error' => $message);
    }
    if (count($file_urls) > 0) {
        for ($i = 0; $i < count($file_urls); $i++) {
            // Download files
            $file_url = trim($file_urls[$i]);
            $file_name = substr(strrchr($file_url, '/'), 1, 99);
            // Place files in uploads/addtoany directory
            wp_get_http($file_url, $upload_dir['basedir'] . '/addtoany/' . $file_name);
        }
    }
}

 function validate($args, $opts, $preview = false, $original_field_name = false)
 {
     $output = "";
     $text = false;
     // grab the input because we're going to test it
     $text = false;
     if (empty($output)) {
         if (isset($args[$this->prefix . 'tf'])) {
             $text = $args[$this->prefix . 'tf'];
         } else {
             if ($original_field_name != false && isset($args[$original_field_name])) {
                 $text = $args[$original_field_name];
             } else {
                 $output .= __("ERROR: Form is invalid. Please check TDO Mini Forms admin.", "tdomf");
             }
         }
     }
     // is it empty?
     if (empty($output) && $opts[$this->prefix . 'required']) {
         if (empty($text) || trim($text) == "" || $text == $opts[$this->prefix . 'default-text']) {
             if ($opts[$this->prefix . 'restrict-type'] == 'url') {
                 if (!empty($opts[$this->prefix . 'title'])) {
                     $output .= sprintf(__("You must specify a vaild URL for %s.", "tdomf"), $opts[$this->prefix . 'title']);
                 } else {
                     $output .= __("You must specify a valid URL.", "tdomf");
                 }
             } else {
                 if ($opts[$this->prefix . 'restrict-type'] == 'email') {
                     if (!empty($opts[$this->prefix . 'title'])) {
                         $output .= sprintf(__("You must specify a vaild email address for %s.", "tdomf"), $opts[$this->prefix . 'title']);
                     } else {
                         $output .= __("You must specify a valid email.", "tdomf");
                     }
                 } else {
                     if ($opts[$this->prefix . 'restrict-type'] == 'number') {
                         if (!empty($opts[$this->prefix . 'title'])) {
                             $output .= sprintf(__("You must specify a number for %s.", "tdomf"), $opts[$this->prefix . 'title']);
                         } else {
                             $output .= __("You must specify a number.", "tdomf");
                         }
                     } else {
                         #$opts[$this->prefix.'restrict-type'] == 'text'
                         if (!empty($opts[$this->prefix . 'title'])) {
                             $output .= sprintf(__("You must specify some %s.", "tdomf"), $opts[$this->prefix . 'title']);
                         } else {
                             $output .= __("You must specify some text.", "tdomf");
                         }
                     }
                 }
             }
         }
     }
     // is it a real email, url or number
     if (empty($output) && $opts[$this->prefix . 'restrict-type'] != 'text') {
         if ($opts[$this->prefix . 'restrict-type'] == 'url') {
             if (!tdomf_check_url($text)) {
                 if (!empty($opts[$this->prefix . 'title'])) {
                     $output .= sprintf(__("The URL \"%s\" for %s does not look correct.", "tdomf"), $text, $opts[$this->prefix . 'title']);
                 } else {
                     $output .= sprintf(__("The URL \"%s\" does not look correct.", "tdomf"), $text);
                 }
             } else {
                 if ($opts[$this->prefix . 'validate-url']) {
                     if (function_exists('wp_get_http')) {
                         $headers = wp_get_http($text, false, 1);
                         if ($headers == false) {
                             $output .= sprintf(__('The URL doesn\'t doesnt seem to exist.', 'tdomf'), $headers["response"]);
                         } else {
                             if ($headers["response"] != '200') {
                                 $output .= sprintf(__('The link doesn\'t doesnt seem to exist. Returned %d error code.', 'tdomf'), $headers["response"]);
                             }
                         }
                     }
                 }
             }
         } else {
             if ($opts[$this->prefix . 'restrict-type'] == 'email') {
                 if (!tdomf_check_email_address($text, $opts[$this->prefix . 'validate-email'])) {
                     if (!empty($opts[$this->prefix . 'title'])) {
                         $output .= sprintf(__("The email address \"%s\" for %s does not seem to be correct.", "tdomf"), $text, $opts[$this->prefix . 'title']);
                     } else {
                         $output .= sprintf(__("The email address \"%s\" does not seem to be correct.", "tdomf"), $text);
                     }
                 }
             } else {
                 if ($opts[$this->prefix . 'restrict-type'] == 'number') {
                     if (is_numeric($text)) {
                         if ($opts[$this->prefix . 'number-decimal']) {
                             $number = floatval($text);
                             if ($opts[$this->prefix . 'number-start'] !== false && $number < $opts[$this->prefix . 'number-start']) {
                                 if (!empty($opts[$this->prefix . 'title'])) {
                                     $output .= sprintf(__("%f for %s is too low. It must be equal to or greater than %f.", "tdomf"), $number, $opts[$this->prefix . 'title'], $opts[$this->prefix . 'number-start']);
                                 } else {
                                     $output .= sprintf(__("%f is too low. It must be equal to or greater than %f.", "tdomf"), $text, $opts[$this->prefix . 'number-start']);
                                 }
                             } else {
                                 if ($opts[$this->prefix . 'number-end'] !== false && $number > $opts[$this->prefix . 'number-end']) {
                                     if (!empty($opts[$this->prefix . 'title'])) {
                                         $output .= sprintf(__("%f for %s is too high. It must be equal to or less than %f.", "tdomf"), $text, $opts[$this->prefix . 'title'], $opts[$this->prefix . 'number-start']);
                                     } else {
//.........这里部分代码省略.........

 protected function import_file($post, $insert_post_id, $date)
 {
     $upload = wp_upload_dir($date);
     // nuke the old file so the new one can claim its name
     $existing_file_check = trailingslashit($upload['basedir']) . $post['meta']['_wp_attached_file'];
     if (is_file($existing_file_check)) {
         @unlink($existing_file_check);
     }
     $url = $post['file']['url'];
     $file_name = basename($post['meta']['_wp_attached_file']);
     $upload = wp_upload_bits($file_name, 0, '', $date);
     /* -- taken from wp-importer --*/
     if ($upload['error']) {
         return new WP_Error('upload_dir_error', $upload['error']);
     }
     // fetch the remote url and write it to the placeholder file
     $headers = wp_get_http($url, $upload['file']);
     //Request failed
     if (!$headers) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', __('Remote server did not respond', 'wordpress-importer'));
     }
     // make sure the fetch was successful
     if ($headers['response'] != '200') {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', sprintf(__('Remote file returned error response %1$d %2$s', 'wordpress-importer'), $headers['response'], get_status_header_desc($headers['response'])));
     } elseif (isset($headers['content-length']) && filesize($upload['file']) != $headers['content-length']) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', __('Remote file is incorrect size', 'wordpress-importer'));
     }
     $max_size = $this->max_attachment_size();
     if (!empty($max_size) and filesize($upload['file']) > $max_size) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', sprintf(__('Remote file is too large, limit is %s', size_format($max_size), 'wordpress-importer')));
     }
     /*-- end taken from wp-importer --*/
     wp_update_attachment_metadata($insert_post_id, wp_generate_attachment_metadata($insert_post_id, $upload['file']));
     return true;
 }

/**
 * Used to download and create image from 'src' and attach to media library
 *
 * @param array $match Array in which [0]->whole img tag and [1]->the img src
 * @param object|array $post The global post variable or object from get_posts()
 * @param string $size The image size required
 * @param array $double_check_tag Used to take care of the misleading wp-image class
 * @return string
 *
 * @since rtPanel 2.0
 */
function rtp_create_external_thumb($match, $post, $size, $double_check_tag = '')
{
    require_once ABSPATH . '/wp-admin/includes/class-wp-filesystem-base.php';
    require_once ABSPATH . '/wp-admin/includes/class-wp-filesystem-direct.php';
    @($file_object = new WP_Filesystem_Direct());
    $img_path = urldecode($match[1]);
    // Need to do this else image fetching will fail
    $remote_get_path = str_replace(' ', '%20', $img_path);
    // Get the img name from url
    $img_name = basename($img_path);
    /* Set permissions if directory is not writable */
    $upload_path = wp_upload_dir();
    if (!is_writable($upload_path['basedir']) || !is_executable($upload_path['basedir'])) {
        $stat = @stat(dirname($upload_path['basedir']));
        // Get the permission bits
        $dir_perms = $stat['mode'] & 07777;
        @chmod($upload_path['basedir'], $dir_perms);
    }
    /* For sanitization of name (just a precaution, although wp_upload_bits will try to take care of this) */
    $img_name = str_replace('&', '-', $img_name);
    $img_name = str_replace('?', '-', $img_name);
    $allowed_image_types = array('jpg', 'jpeg', 'jpe', 'gif', 'png', 'bmp', 'ico', 'tif', 'tiff');
    $check_extension = pathinfo($img_name);
    // if not in the array assign a particular name
    if (!in_array($check_extension['extension'], $allowed_image_types)) {
        $img_name = 'query-image.jpg';
    }
    // get placeholder file in the upload dir with a unique, sanitized filename
    $file = wp_upload_bits($img_name, 0, '');
    // fetch the remote url and write it to the placeholder file
    $wp_remote_get = wp_get_http($remote_get_path, $file['file'], 5);
    if ($wp_remote_get == '' || $wp_remote_get == false) {
        $file_object->delete($file['file']);
        return 0;
    }
    /* if response id is 200 and it's type is image */
    if ($wp_remote_get['response'] == 200 && substr($wp_remote_get['content-type'], 0, 5) == 'image') {
        //created img path
        $img_path = $file['file'];
        //created img url
        $img_url = $file['url'];
        // Get the image type. Must to use it as a post thumbnail.
        $img_type = wp_check_filetype($img_path);
        extract($img_type);
        $img_info = apply_filters('wp_handle_upload', array('file' => $img_path, 'url' => $img_url, 'type' => $type), 'sideload');
        require_once ABSPATH . '/wp-admin/includes/image.php';
        /* use image exif/iptc data for title and caption defaults if possible */
        if ($img_meta = @wp_read_image_metadata($img_info['file'])) {
            if (trim($img_meta['title']) && !is_numeric(sanitize_title($img_meta['title']))) {
                $img_title = $img_meta['title'];
            }
            if (trim($img_meta['caption'])) {
                $img_content = $img_meta['caption'];
            }
        }
        $img_title = isset($img_title) ? $img_title : str_replace('.' . $ext, '', basename($img_url));
        $img_content = isset($img_content) ? $img_content : str_replace('.' . $ext, '', basename($img_url));
        // Construct the attachment array
        $attachment = array('post_mime_type' => $img_info['type'], 'guid' => $img_url, 'post_parent' => $post->ID, 'post_title' => $img_title, 'post_content' => $img_content);
        // Save the attachment metadata
        $new_image_id = wp_insert_attachment($attachment, $img_info['file'], $post->ID);
        if (!is_wp_error($new_image_id) && $new_image_id != 0 && $new_image_id != '') {
            wp_update_attachment_metadata($new_image_id, wp_generate_attachment_metadata($new_image_id, $img_info['file']));
            $updated_post = array();
            $updated_post['ID'] = $post->ID;
            if (is_int($new_image_id)) {
                $image_src = wp_get_attachment_image_src($new_image_id, $size);
                // get the img tag classes
                preg_match('/<img.*class\\s*=\\s*"([^"]*)[^>]+>/i', $match[0], $class);
                /* if the image tag has class attribute and it does not have wp-image in class */
                if (isset($class[1])) {
                    $updated_class = $class[1] . ' wp-image-' . $new_image_id;
                    $updated_image_tag = str_replace('class="' . $class[1] . '"', 'class="' . $updated_class . '"', $match[0]);
                    $updated_post['post_content'] = str_replace($match[0], $updated_image_tag, $post->post_content);
                    if ($double_check_tag != '') {
                        $updated_post['post_content'] = str_replace($double_check_tag, $updated_image_tag, $post->post_content);
                    }
                    // Update the post
                    wp_update_post($updated_post);
                } else {
                    $updated_image_tag = str_replace('<img', '<img role="img" class="wp-image-' . $new_image_id . '"', $match[0]);
                    $updated_post['post_content'] = str_replace($match[0], $updated_image_tag, $post->post_content);
                    // Update the post
                    wp_update_post($updated_post);
                }
                return $image_src[0];
            } else {
                $updated_post = array();
                $updated_post['ID'] = $post->ID;
//.........这里部分代码省略.........

 function downloadImage($image, $moblog, $id)
 {
     $upload = wp_upload_dir();
     $base_dir = $upload['basedir'] . '/moblog-' . $moblog . '/';
     $newimage = $base_dir . $id . '.jpg';
     $newimageurl = $upload['baseurl'] . '/moblog-' . $moblog . '/' . $id . '.jpg';
     if (!is_dir($base_dir)) {
         mkdir($base_dir);
     }
     $get = wp_get_http($image, $newimage);
     if ($get['response'] == 200 && file_exists($newimage)) {
         return $newimageurl;
     } else {
         return $image;
     }
 }

 /**
  * Attempt to download a remote file attachment
  *
  * @param string $url URL of item to fetch
  * @param array $post Attachment details
  * @return array|WP_Error Local file location details on success, WP_Error otherwise
  */
 function fetch_remote_file($url, $subdir = null)
 {
     add_filter('http_request_timeout', array($this, 'bump_request_timeout'));
     // extract the file name and extension from the url
     $file_name = basename($url);
     // get placeholder file in the upload dir with a unique, sanitized filename
     $upload = $this->wp_upload_bits($file_name, '', $subdir);
     // var_dump( $upload );
     //echo "<br />" . $url . "<br />"; return new WP_Error( 'import_file_error', '' );
     if ($upload['error']) {
         return new WP_Error('upload_dir_error', $upload['error']);
     }
     // fetch the remote url and write it to the placeholder file
     $headers = wp_get_http($url, $upload['file']);
     // request failed
     if (!$headers) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', __('Remote server did not respond', 'wordpress-importer'));
     }
     // make sure the fetch was successful
     if ($headers['response'] != '200') {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', sprintf(__('Remote server returned error response %1$d %2$s', 'wordpress-importer'), esc_html($headers['response']), get_status_header_desc($headers['response'])));
     }
     $filesize = filesize($upload['file']);
     if (isset($headers['content-length']) && $filesize != $headers['content-length']) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', __('Remote file is incorrect size', 'wordpress-importer'));
     }
     if (0 == $filesize) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', __('Zero size file downloaded', 'wordpress-importer'));
     }
     $max_size = (int) $this->max_attachment_size();
     if (!empty($max_size) && $filesize > $max_size) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', sprintf(__('Remote file is too large, limit is %s', 'wordpress-importer'), size_format($max_size)));
     }
     return $upload;
 }

function rigr_fetch_remote_file($post, $url)
{
    $url2 = str_replace('&', '&', str_replace('https://', 'http://', $url));
    preg_match('/[a-z0-9;=_%\\Q?&.-+[]\\E]+\\.(jpg|jpeg|gif|png|rar|zip|mp3|mp4|flv|pdf|swf)/i', $url2, $pu);
    $file_name = str_replace('%25', '-', $pu[0]);
    $file_name = preg_replace('/[;=%\\Q?&-+\\E]+/i', '-', $file_name);
    $file_name = strlen($file_name) > 255 ? substr($file_name, 180) : $file_name;
    $upload = wp_upload_bits($file_name, 0, '', $post['post_date']);
    if ($upload['error']) {
        echo $upload['error'];
        return new WP_Error('upload_dir_error', $upload['error']);
    }
    $headers = wp_get_http($url2, $upload['file']);
    if (!$headers) {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', __('<p class="help"><img src="images/no.png"> <span style="color: #ff0000;">Remote server did not respond</span></p>', 'rigr'));
    }
    if ($headers['response'] != '200') {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', sprintf(__('Remote server says: %1$d %2$s', 'rigr'), $headers['response'], get_status_header_desc($headers['response'])));
    } elseif (isset($headers['content-length']) && filesize($upload['file']) != $headers['content-length']) {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', __('<p class="help"><img src="images/no.png"> <span style="color: #ff0000;">Remote file can not be downloaded</span></p>', 'rigr'));
    }
    $min_size = max((double) $_POST['rigr_min_size'], 0) * 1024;
    $max_size = max((int) $_POST['rigr_max_size'], (int) get_site_option('fileupload_maxk')) * 1024;
    /* -- fileupload_maxk for wpmu compatibility -- */
    $file_size = filesize($upload['file']);
    if (!empty($max_size) && $file_size > $max_size) {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', sprintf(__('Remote file is %1$d KB but limit is %2$d', 'rigr'), $file_size / 1024, $max_size / 1024));
    } elseif (!empty($min_size) && $file_size < $min_size) {
        @unlink($upload['file']);
        return new WP_Error('import_file_error', sprintf(__('Remote file size is less then %1$d KB', 'rigr'), $min_size / 1024));
    }
    /* -- This check is for wpmu compatibility -- */
    if (function_exists('get_space_allowed')) {
        $space_allowed = 1048576 * get_space_allowed();
        $space_used = get_dirsize(BLOGUPLOADDIR);
        $space_left = $space_allowed - $space_used;
        if ($space_left < 0) {
            @unlink($upload['file']);
            return new WP_Error('not_enough_diskspace', sprintf(__('You have %1$d KB diskspace used but %2$d allowed.', 'rigr'), $space_used / 1024, $space_allowed / 1024));
        }
    }
    $upload['content-type'] = $headers['content-type'];
    return $upload;
}

 function evc_fetch_remote_file($args)
 {
     if (!empty($args)) {
         extract($args);
     }
     //$post_date = date('Y-m-d H:i:s');
     $upload = wp_upload_dir();
     $upload = wp_upload_bits($file_name, 0, '');
     if ($upload['error']) {
         return new WP_Error('upload_dir_error', $upload['error']);
     }
     $headers = wp_get_http($url, $upload['file']);
     if (!$headers) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', __('Remote server did not respond', 'evc'));
     }
     if ($headers['response'] != '200') {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', sprintf(__('Remote server says: %1$d %2$s', 'evc'), $headers['response'], get_status_header_desc($headers['response'])));
     } elseif (isset($headers['content-length']) && filesize($upload['file']) != $headers['content-length']) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', __('Remote file is incorrect size', 'evc'));
     }
     $max_size = (int) get_site_option('fileupload_maxk') * 1024;
     // fileupload_maxk for wpmu compatibility
     $file_size = filesize($upload['file']);
     if (!empty($max_size) && $file_size > $max_size) {
         @unlink($upload['file']);
         return new WP_Error('import_file_error', sprintf(__('Remote file is %1$d KB but limit is %2$d', 'evc'), $file_size / 1024, $max_size / 1024));
     }
     // This check is for wpmu compatibility
     if (function_exists('get_space_allowed')) {
         $space_allowed = 1048576 * get_space_allowed();
         $space_used = get_dirsize(BLOGUPLOADDIR);
         $space_left = $space_allowed - $space_used;
         if ($space_left < 0) {
             @unlink($upload['file']);
             return new WP_Error('not_enough_diskspace', sprintf(__('You have %1$d KB diskspace used but %2$d allowed.', 'evc'), $space_used / 1024, $space_allowed / 1024));
         }
     }
     $upload['content-type'] = $headers['content-type'];
     return $upload;
 }