Question

I have a string and an array, the array contains all kinds of parts of a string I want to find in the original string (this is for basically reading a error log and identifying what line there is a “Could not find”, or “Error”, etc.)

Is the foreach preg_match the best method?

Answer 1

The easiest and speediest way is using strpos(). If it returns FALSE it didn’t find the substring, otherwise it did. Make sure you use === as it might return 0:

$found_substring = (strpos($text, $substring) !== FALSE);

For case-insensitivity, use stripos(). If you need more matching power, use preg_match().