Multibyte String Functions
PHP Manual

mb_strrpos

Find position of last occurrence of a string in a string

Description

intfalse mb_strrpos(
    string $haystack,
    string $needle,
    int $offset = 0,
    stringnull $encoding = null
)

Performs a multibyte safe strrpos operation based on the number of characters. needle position is counted from the beginning of haystack. First character's position is 0. Second character position is 1.

Parameters

haystack

The string being checked, for the last occurrence of needle

needle

The string to find in haystack.

offset
May be specified to begin searching an arbitrary number of characters into the haystack. Negative values will stop searching at an arbitrary point prior to the end of the haystack.
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 numeric position of the last occurrence of needle in the haystack string. If needle is not found, it returns false.

Errors/Exceptions

  • If offset is greater than the length of haystack, a ValueError will be thrown.

Changelog

Version Description
8.0.0 needle now accepts an empty string.
8.0.0 Passing the encoding as the third argument instead of an offset has been removed.
8.0.0 encoding is nullable now.

See Also

  • mb_strpos
  • mb_internal_encoding
  • strrpos