PHP function to delete all between certain character(s) in string

Question

I\'m interested in function delete_all_between($char1, $char2, $string) that will search given $string for $char1 and $char2 and, if such has been found, clear

Answer 1

I think substr() works too slow. The best way is:

return substr($string, 0, $beginningPos) . 
       substr($string, $endPos + strlen($end));