Question

I want to look through my PHP $_POST variables and change anything that is "undefined" (because of how jQuery is sending it) to "" or at least " " so that when the email form is submitted it doesn’t say "undefined" wherever the value wasn’t filled out (optional fields).

Thanks!

Answer 1

I recommend you consider altering your javascript to handle the undefines better, BUT..

Here is a no loops approach to do it:

$_POST = unserialize(str_replace('s:9:"undefined";', 's:0:"";', serialize($_POST)));

There is also the more typical approach of using a single loop like so:

foreach($_POST as &$p) if($p=='undefined') $p = '';

Note: The serialize + unserialize approach is cool in that is does not use a loop, but the loop approach is probably slightly faster, especially when $_POST is large.