对数组中的每个元素应用用户自定义函数：
<?php function myfunction($value,$key) { echo "The key $key has the value $value<br>"; } $a=array("a"=>"red","b"=>"green","c"=>"blue"); array_walk($a,"myfunction"); ?>
php array_walk
原文：http://www.cnblogs.com/saonian/p/5311592.html
