how to call a php function from onclick event of submit

Question

1.00/5 (1 vote)

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i've trying of the next way

PHP

 <?php  <br mode="hold" /?> function myfnc()
{   
echo "Hello world" ;   
}  
?>  
<form action="trytocallfunction.php" method="post">
<input type="submit" name="submit" value="submit"  önclick="<?php myfnc();??>" />
</form>

Posted 28-May-14 15:39pm

nelson_fonseca

Updated 7-May-20 13:59pm

DamithSL

v2

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Comments

Mohibur Rashid 28-May-14 22:36pm

This is not how server works, this is not how php works. This is a very common mistake by newbie and very common question on line.

Try to understand how ajax work and find a way to fit ajax in your requirements.

Peter Leow 28-May-14 23:06pm

ajax may be too far fetch for OP who has not got the correct understanding of how the web works.

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Peter Leow · Accepted Answer · 2014-05-28T17:05:00

The myfnc() exists on the server-side and is to be executed on the server-side only, it will not appear on the client-side, you have to submit the form to the server and call the function over there, try this:

XML

<?php
if (isset($_POST['submit']))
{
   myfnc();
}
function myfnc()
{
    echo "Hello world" ;
}
?>
<form action="trytocallfunction.php" method="post">
<input type="submit" name="submit" value="submit">
</form>

You should read this to find out more Beginner's Guide to HTML5 & CSS3 - Server Side Story[^]