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Tags: PHP 5.x PHP 7.x PHP 8.x

strrpos — Find the position of the last occurrence of a substring in a string.


    string $haystack,
string $needle,
int $offset = 0
): int|false
Find the numeric position of the last occurrence of needle in the haystack string. If needle is not found, strrpos will return false.


The string to search in.
Prior to PHP 8.0.0, if needle is not a string, it is converted to an integer and applied as the ordinal value of a character. This behavior is deprecated as of PHP 7.3.0, and relying on it is highly discouraged. Depending on the intended behavior, the needle should either be explicitly cast to string, or an explicit call to chr() should be performed.
If zero or positive, the search is performed left to right skipping the first offset bytes of the haystack. If negative, the search is performed right to left skipping the last offset bytes of the haystack and searching for the first occurrence of needle.

Return Values

Returns the position where the needle exists relative to the beginning of the haystack string (independent of search direction or offset). Returns false if the needle was not found.