int mb_strpos(string $haystack, string $needle[, int $offset = 0, string $encoding = mb_internal_encoding()])
Finds position of the first occurrence of a string in a string.
Performs a multi-byte safe strpos() operation based on number of characters. The first character's position is 0, the second character position is 1, and so on.
Returns the numeric position of the first occurrence of
needle in the
haystack string. If
needle is not found, it returns
- string $haystack: The string being checked.
- string $needle: The string to find in
haystack. In contrast with strpos(), numeric values are not applied as the ordinal value of a character.
- int $offset [ = 0]: The search offset. If it is not specified, 0 is used. A negative offset counts from the end of the string.
- string $encoding [ = mb_internal_encoding()]: The
encodingparameter is the character encoding. If it is omitted, the internal character encoding value will be used.
|7.1.0||Support for negative |