Christoph Weber schrieb im Artikel <2g************@uni-berlin.de>:
clicked with the mouse.
The form should not be submitted if the user hits the RETURN key.
You could give the submit button a name and check in your form if the
variable $_POST[buttonname] (resp. $_[GET]....) is empty respectively set.
e.g.:
<form name="somewhat" action="my_php_form.php" method="post">
[...]
<input type="submit" name="buttonname" value="click me">
</form>
in your evaluation form you may try using:
if (empty($_POST[buttonname]))
{
echo "please click button for submit";
exit;
}
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