mb_ereg_replace_callback()

(PHP 5 >= 5.4.1, PHP 7)

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

说明

Scans$stringfor matches to$pattern, then replaces the matched text with the output of$callbackfunction.

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

参数

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$subjectstring. The callback should return the replacement string.

You'll often need the$callbackfunction 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.

The search option. See mb_regex_set_options() for explanation.

返回值

The resultant string on success, or FALSE on error.

注释

mb_regex_encoding()指定的内部编码或字符编码将会当作此函数用的字符编码。

范例

mb_ereg_replace_callback() example

以上例程会输出：

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

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

参见

• mb_regex_encoding()Set/Get character encoding for multibyte regex
• mb_ereg_replace()Replace regular expression with multibyte support
• Anonymous functions
• callback类型的信息

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