[PHP] Detecting an image form submission via PHP

[Neil Freeman]

Hi,

When a form is submitted using a standard SUBMIT button it is possible
to catch this via php using  if ($submit) but how do you catch this if
you are using an image for submitting instead of the button?

Any help would be greatly appreciated.

Here is a cut down version of my code:
#############################
<?php

if ($submit)
{
    echo "<script>alert(\"submitted\");</script>";
}
else
{
    echo "<script>alert(\"not submitted\");</script>";
}

?>

<form name="formMoviesSearch" method="post" action="movies_search2.htm">

<!-- both methods put here for testing -->
<input type="image" border="0" name="sub" src="movies.gif">
<input type="submit" name="submit" value="go">

</form>
#############################

Neil
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