php线性表的入栈与出栈实例分析

<?php $stack = array("Simon", "Elaine"); //定义数组 array_push($stack, "Helen", "Peter"); //入栈 print_r($stack); ?>

<?php $stack = array("Simon", "Elaine"); //定义数组 array_unshift ($stack, "Helen", "Peter"); //入栈 print_r($stack); ?>

<?php $stack = array("Simon", "Elaine", "Helen", "Peter"); echo array_pop($stack)."/n"; //出栈 print_r($stack); ?>

<?php $stack = array("Simon", "Elaine", "Helen", "Peter"); echo array_shift($stack)."/n"; //出栈 print_r($stack); ?>