(PHP 5 >= 5.2.0, PHP 7, PHP 8)
mb_stripos — Finds position of first occurrence of a string within another, case insensitive
mb_stripos( string $haystack, string $needle, int $offset = 0, ?string $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.
encodingThe encoding parameter is the character encoding. If it is omitted or null, the internal character encoding value will be used.
Return the numeric position of the first occurrence of needle in the haystack string, or false if needle is not found.
offset is greater than the length of haystack, a ValueError will be thrown. | Version | Description |
|---|---|
| 8.0.0 | needle now accepts an empty string. |
| 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