(PHP 5 >= 5.4.1, PHP 7)

mb_ereg_replace_callbackPerform a regular expresssion seach and replace with multibyte support using a callback


string mb_ereg_replace_callback ( string $pattern , callable $callback , string $string [, string $option = "msr" ] )

Scans string for matches to pattern, then replaces the matched text with the output of callback function.

The behavior of this function is almost identical to mb_ereg_replace(), except for the fact that instead of replacement parameter, one should specify a callback.



The regular expression pattern.

Multibyte characters may be used in pattern.


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

You'll often need the callback function for a mb_ereg_replace_callback() in just one place. In this case you can use an anonymous function to declare the callback within the call to mb_ereg_replace_callback(). By doing it this way you have all information for the call in one place and do not clutter the function namespace with a callback function's name not used anywhere else.


The string being checked.


Matching condition can be set by option parameter. If i is specified for this parameter, the case will be ignored. If x is specified, white space will be ignored. If m is specified, match will be executed in multiline mode and line break will be included in '.'. If p is specified, match will be executed in POSIX mode, line break will be considered as normal character. Note that e cannot be used for mb_ereg_replace_callback().


The resultant string on success, or FALSE on error.



내부 인코딩이나 mb_regex_encoding()으로 정의한 문자 인코딩을 이 함수의 문자 인코딩으로 사용할 수 있습니다.


Example #1 mb_ereg_replace_callback() example

// this text was used in 2002
// we want to get this up to date for 2003
$text "April fools day is 04/01/2002\n";
$text.= "Last christmas was 12/24/2001\n";
// the callback function
function next_year($matches)
// as usual: $matches[0] is the complete match
  // $matches[1] the match for the first subpattern
  // enclosed in '(...)' and so on
return $matches[1].($matches[2]+1);


위 예제의 출력:

April fools day is 04/01/2003
Last christmas was 12/24/2002

Example #2 mb_ereg_replace_callback() using anonymous function supported in PHP 5.3.0 or later

// this text was used in 2002
// we want to get this up to date for 2003
$text "April fools day is 04/01/2002\n";
$text.= "Last christmas was 12/24/2001\n";

            function (
$matches) {


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