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mb_ereg_search_regs	mb_eregi

Multibyte String Functions	Last updated: Mon, 26 Oct 2026

mb_ereg_search_setpos

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

mb_ereg_search_setpos — Set start point of next regular expression match

Description

function mb_ereg_search_setpos(int $offset): bool

mb_ereg_search_setpos() sets the starting point of a match for mb_ereg_search().

Parameters

offset: The position to set. If it is negative, it counts from the end of the string.

Return Values

Returns true on success or false on failure.

Changelog

Version	Description
7.1.0	Support for negative `offset`s has been added.

Notes

Note:
The internal encoding or the character encoding specified by mb_regex_encoding() will be used as the character encoding for this function.

See Also

mb_regex_encoding() - Set/Get character encoding for multibyte regex
mb_ereg_search_init() - Setup string and regular expression for a multibyte regular expression match

mb_ereg_search_regs	mb_eregi

Multibyte String Functions	Last updated: Mon, 26 Oct 2026