mb_ereg_replace_callback

Perform a regular expression search and replace with multibyte support using a callback.

mb_ereg_replace_callback Function synopsis

#[\Deprecated]
mb_ereg_replace_callback(
    string $pattern,
    callable $callback,
    string $string,
    ?string $options = null
  ): string|false|null

Parameters

$pattern

Typestring

The regular expression pattern.

$callback

Typecallable

A callback that will be called and passed an array of matched elements in the $string string. The callback should return the replacement string.

$string

Typestring

The string being checked.

$options

OptionalType?stringDefault valuenull

The search option. See mb_regex_set_options for explanation.

Return value

Typestring|false|null

The resultant string on success, or false on error. If $string is not valid for the current encoding, null is returned.