isset - Calling a particular PHP function on form submit

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isset - Calling a particular PHP function on form submit

posted Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

isset - Calling a particular PHP function on form submit

I was trying to call a particular php function in submit of a form both the form and php scripts are in same page. My code is below.(it is not working and so I need help)

<html>
    <body>
    <form method="post" action="display()">
        <input type="text" name="studentname">
        <input type="submit" value="click">
    </form>
    <?php
        function display()
        {
            echo "hello".$_POST["studentname"];
        }
    ?>
    </body>
</html>

question from:https://stackoverflow.com/questions/12328354/calling-a-particular-php-function-on-form-submit

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1 Reply

深蓝 · Answer 1 · 2021-10-06T05:51:09+0000

In the following line

<form method="post" action="display()">

the action should be the name of your script and you should call the function, Something like this

<form method="post" action="yourFileName.php">
    <input type="text" name="studentname">
    <input type="submit" value="click" name="submit"> <!-- assign a name for the button -->
</form>

<?php
function display()
{
    echo "hello ".$_POST["studentname"];
}
if(isset($_POST['submit']))
{
   display();
} 
?>

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isset - Calling a particular PHP function on form submit

isset - Calling a particular PHP function on form submit

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