PHP: Search for single & double quotes and square brackets?

T

The Cult of Chesire Cat

New member
I'm trying to have preg_match search for single and double quotes and square brackets within a string.
However, preg_match's syntax is like a foreign language for me and I can't seem to figure out how to do this.
 
you can use something like this if you want to replace them

$InvalidChars=array("[",","]","'","\"");
$clean_name = str_replace($InvalidChars,"_",$_GET['key_name']);
 
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