preg_replace help

Hello all,
I want to remove all characters except the ones in my preg_replace function.

Here is what I have so far:

$allowed = "/[^a-z0-9\\040\\.\\-\\_\\\\]/i";
$v = preg_replace($allowed,"",$title);	

Code (markup):

but I also want to include all instances of % characters and $ characters

how should I add these?

Thanks a ton!
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by % chars you mean html-entities?

by $ chars you mean set variables?

 

no no

I just would like to leave those characters in the string, instead of removing thing with the preg_replace function. So how can I add them to the allow list already in the preg_replace function?

 

Sorry I'm not a RegExp person but you could try this

$allowed = "/[^a-z0-9\\040\\.\\-\\_\\\\\][$][%]/i";

Code (markup):

 

I've only just realised that you escape by using backslash so you could add to your string \$ and \% I think I'm not actually sure but you could try that too

 

$allowed = "/[^a-z0-9\$%\\040\\.\\-\\_\\\\]/i";
$v = preg_replace($allowed,"",$title);

PHP: