problem with back button

[mysterious guy]

Hi,
On submitting a form a php script is called to validate the form. I did the validation with javascript code integrated in the php script. I know its not the proper way to do the validation but...

The problem is that if I dn't fill in the form..and click on the back button..the validation script is executed and i got an error message popup.I want the validation script to be executed only when I click on the submit button.Is this possible? But still I must use the form action so that I could retrieve the values in the validation script.

A+

[dreamcatcher]

This thread should probably be in the javascript forum.

Anyway, have you tried just using the onclick method with only the submit button?

<input type="submit" value="Submit" onclick="javascript:somefunction()">

?

[mysterious guy]

But how do I check whether i've fill in fields on the form.I'm using $_REQUEST to get the values when I submit the form. The validation is in a php script. I dn't think its possible to call a php script using 'OnClick'..if its possible.How?

[coopster]

I want the validation script to be executed only when I click on the submit button.Is this possible?

Yes.

<form action="myscript.php" method="post"> 
<input type="submit" name="submit" value="submit" /> 
</form> 
<?php 
if (isset [php.net]($_POST['submit'])) { 
 // form has been submitted, validate entries 
} 
?>