mb_stripos

(PHP 5 >= 5.2.0, PHP 7)

Finds position of first occurrence of a string within another, case insensitive

int mb_stripos ( string $haystack, string $needle [, int $offset = 0 [, string $encoding = mb_internal_encoding() ]] )

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.

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.

Returns:

Return the numeric position of the first occurrence of needle in the haystack string, or FALSE if needle is not found.