Replace string only once with php preg_replace

Question

I need a replace string once function and believe preg_match might be my best bet.

I was using this, but due to the dynamicness of use, sometimes this function behav

Answer 1

You are looking for preg_quote instead of trying to escape the \ yourself (which doesn't take [, + and many others into account):

$return = preg_replace('/'.preg_quote($remove,'/').'/', $replace, $string, 1);