How to add / to preg_replace template

Question

I made this simple function to filter data. I add characters that I allow to include, but I don’t know how to add the / character, as well

public function filter($text) { return preg_replace('/[^^a-zA-Z0-9#@:_(), .!@ " ]/','',$text); } 

Answer 1

You can either escape with a backslash:

 preg_replace('/\//' ...); 

Or use other characters as delimiters:

 preg_replace('|/|' ...); 

Answer 2

Just avoid the backslash character.

 public function filter($text) { return preg_replace('/[^^a-zA-Z0-9#@:_(), .!@ "\/ ]/','',$text); }