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mb_ereg_search_getregs	mb_ereg_search_pos

Multibyte String Functions	Last updated: Mon, 26 Oct 2026

mb_ereg_search_init

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

mb_ereg_search_init — Setup string and regular expression for a multibyte regular expression match

Description

function mb_ereg_search_init(string $string, ?string $pattern = null, ?string $options = null): bool

mb_ereg_search_init() sets string and pattern for a multibyte regular expression. These values are used for mb_ereg_search(), mb_ereg_search_pos(), and mb_ereg_search_regs().

Parameters

string: The search string.
pattern: The search pattern.
options: The search option. See mb_regex_set_options() for explanation.

Return Values

Returns true on success or false on failure.

Changelog

Version	Description
8.0.0	`pattern` and `options` are nullable now.

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_regs() - Returns the matched part of a multibyte regular expression

mb_ereg_search_getregs	mb_ereg_search_pos

Multibyte String Functions	Last updated: Mon, 26 Oct 2026