mb_stripos Finds position of first occurrence of a string within another, case insensitive &reftitle.description; intmb_stripos stringhaystack stringneedle intoffset stringencoding mb_stripos returns the numeric position of the first occurrence of needle in the haystack string. Unlike mb_strpos, mb_stripos is case-insensitive. If needle is not found, it returns &false;. &reftitle.parameters; haystack The string from which to get the position of the first occurrence of needle needle The string to find in haystack offset The position in haystack to start searching encoding Character encoding name to use. If it is omitted, internal character encoding is used. &reftitle.returnvalues; Return the numeric position of the first occurrence of needle in the haystack string, or &false; if needle is not found. &reftitle.seealso; stripos strpos mb_strpos