# mb_stripos

(PHP 5 >= 5.2.0, PHP 7)

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

### Description

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

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
--- | ---
7.1.0 | Support for negative `offset`s has been added.

### See Also

- stripos() - Find the position of the first occurrence of a case-insensitive substring in a string
- strpos() - Find the position of the first occurrence of a substring in a string
- mb_strpos() - Find position of first occurrence of string in a string