PHP strpos check against many

Question

I am looking to use strpos to check for many chars in a string, for example:

I would like to separately check for the chars :,!, a

Answer 1

If any of them are found, return false.

Since you don't care about the actual position of the character, you could use regex:

preg_match("/[:!&]/", $str); // 1 if found, 0 if none found