php preg_replace替换实例讲解

mixed preg_replace ( mixed $pattern , mixed $replacement , mixed $subject [, int $limit = -1 [, int &$count ]] )

<?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_replace returns\n<pre/>";

 print_r(preg_replace($pattern, $replace, $subject));

 ?>