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preg_filter(PHP 5 >= 5.3.0, PHP 7) preg_filter — Perform a regular expression search and replace Description
mixed preg_filter
( mixed
$pattern
, mixed $replacement
, mixed $subject
[, int $limit = -1
[, int &$count
]] )preg_filter() is identical to preg_replace() except it only returns the (possibly transformed) subjects where there was a match. For details about how this function works, read the preg_replace() documentation. Return Values
Returns an array if the
If no matches are found or an error occurred, an empty array
is returned when Examples
Example #1 Example comparing preg_filter() with preg_replace()
<?php The above example will output: preg_filter returns Array ( [0] => A:C:1 [1] => B:C:a [2] => A:2 [3] => B:b [4] => A:3 [7] => A:4 ) preg_replace returns Array ( [0] => A:C:1 [1] => B:C:a [2] => A:2 [3] => B:b [4] => A:3 [5] => A [6] => B [7] => A:4 ) See Also
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