(PHP 5 >= 5.2.0, PHP 7)
mb_stripos — Finds position of first occurrence of a string within another, case insensitive
mb_stripos ( string $haystack , string $needle [, int $offset = 0 [, string|null $encoding = null ]] ) : int|false
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.
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 the numeric position of the first occurrence of needle in the haystack string, or false if needle is not found.
| Version | Description |
|---|---|
| 8.0.0 | encoding is nullable now. |
| 7.1.0 | Support for negative offsets has been added. |
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https://www.php.net/manual/en/function.mb-stripos.php