[int$offset = 0],
[string|null$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.
The string from which to get the position of the first occurrence of needle
The string to find in haystack
The position in haystack to start searching. A negative offset counts from the end of the string.
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.
|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.|