PCRE
PHP Manual

preg_replace_callback_array

(PHP 7)

preg_replace_callback_arrayPerform a regular expression search and replace using callbacks

Описание

mixed preg_replace_callback_array ( array $patterns_and_callbacks , mixed $subject [, int $limit = -1 [, int &$count ]] )

The behavior of this function is similar to preg_replace_callback(), except that callbacks are executed on a per-pattern basis.

Список параметров

patterns_and_callbacks

An associative array mapping patterns (keys) to callbacks (values).

subject

The string or an array with strings to search and replace.

limit

The maximum possible replacements for each pattern in each subject string. Defaults to -1 (no limit).

count

If specified, this variable will be filled with the number of replacements done.

Возвращаемые значения

preg_replace_callback_array() returns an array if the subject parameter is an array, or a string otherwise. On errors the return value is NULL

If matches are found, the new subject will be returned, otherwise subject will be returned unchanged.

Примеры

Пример #1 preg_replace_callback_array() example

<?php
$subject 
'Aaaaaa Bbb';

preg_replace_callback_array(
    [
        
'~[a]+~i' => function ($match) {
            echo 
strlen($match[0]), ' matches for "a" found'PHP_EOL;
        },
        
'~[b]+~i' => function ($match) {
            echo 
strlen($match[0]), ' matches for "b" found'PHP_EOL;
        }
    ],
    
$subject
);
?>

Результат выполнения данного примера:

6 matches for "a" found
3 matches for "b" found

Смотрите также


PCRE
PHP Manual