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mb_strrichr

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

mb_strrichr — Finds the last occurrence of a character in a string within another, case insensitive

Description

mb_strrichr(
    string $haystack,
    string $needle,
    bool $before_needle = false,
    ?string $encoding = null
): string|false

mb_strrichr() finds the last occurrence of needle in haystack and returns the portion of haystack. Unlike mb_strrchr(), mb_strrichr() is case-insensitive. If needle is not found, it returns false.

Parameters

haystack

The string from which to get the last occurrence of needle.

needle

The string to find in haystack.

before_needle

Determines which portion of haystack this function returns. If set to true, it returns all of haystack from the beginning to the last occurrence of needle. If set to false, it returns all of haystack from the last occurrence of needle to the end.

encoding

The encoding parameter is the character encoding. If it is omitted or null, the internal character encoding value will be used.

Return Values

Returns the portion of haystack. or false if needle is not found.

Changelog

Version Description
8.0.0 needle now accepts an empty string.
8.0.0 encoding is nullable now.

See Also