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

Description

intfalse mb_stripos(
    string $haystack,
    string $needle,
    int $offset = 0,
    stringnull $encoding = null
)

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. A negative offset counts from the end of the string.
encoding: Character encoding name to use. If it is omitted, internal character encoding is used.

Return Values

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

Changelog

Version	Description
8.0.0	`needle` now accepts an empty string.
8.0.0	`encoding` is nullable now.
7.1.0	Support for negative `offset`s has been added.

mb_stripos

Description

Parameters

Return Values

Changelog

See Also