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Substring between two strings

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Get the substring between two strings

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  1. /**
  2.  * Returns the substring between two strings, delimiters not included
  3.  * @param string $string Haystack
  4.  * @param string $start Starting delimiter
  5.  * @param string|null $end Ending delimiter, if omitted will return the rest of the string
  6.  * @return bool|string The substring between $start and $end or false if either string is not found
  7.  */
  8. function substr_between($string, $start, $end=null) {
  9. 	if(($start_pos = strpos($string, $start)) !== false) {
  10. 		if($end) {
  11. 			if(($end_pos = strpos($string, $end, $start_pos + strlen($start))) !== false) {
  12. 				return substr($string, $start_pos + strlen($start), $end_pos - ($start_pos + strlen($start)));
  13. 			}
  14. 		} else {
  15. 			return substr($string, $start_pos);
  16. 		}
  17. 	}
  18. 	return false;
  19. }

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