復制代碼 代碼如下:

<?php
$subject = array('1', 'a', '2', 'b', '3', 'A', 'B', '4');
$pattern = array('//d/', '/[a-z]/', '/[1a]/');
$replace = array('A:$0', 'B:$0', 'C:$0');

echo "preg_filter returns/n";
print_r(preg_filter($pattern, $replace, $subject));

echo "preg_replace returns/n";
print_r(preg_replace($pattern, $replace, $subject));
?>

復制代碼 代碼如下:

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
)