current()
next()
prev()范例
<?php $people = array("Peter", "Joe", "Glenn", "Cleveland"); echo current($people) . "<br />"; echo next($people) . "<br />"; echo prev($people); ?>
输出：
Peter Joe Peter
php一些技巧函数
原文：http://www.cnblogs.com/zx-admin/p/4082889.html
