PHP: Preg replace parentheses?

Question

What is the proper syntax to preg_replace just the parenthesis in PHP?

$search = preg_replace('/\(\)/','',$search);

Thank you

Answer 1

Assuming you want to remove both ( and ) from the $search string:

$search = preg_replace('/\(|\)/','',$search);

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I think the fastest way to do this is using the strtr function, like this:

$search = strtr($search, array('(' => '', ')' => ''));

Answer 2

That is the proper syntax, though preg_replace is for regular expressions, if you just want to replace () then str_replace is a couple of times faster.

If you want to replace ( or ) wherever they are, you could use

preg_replace("/\(|\)/", "", $str);

Answer 3

You mean like this?

$search = preg_replace('/[()]/', '', $search);

This will strip all parenthesis without regard to pairing.