Posted in PHP onJune 30, 2010
在PHP中数组分为两类: 数字索引数组和关联数组。
其中数字索引数组和C语言中的数组一样,下标是为0,1,2…
而关联数组下标可能是任意类型,与其它语言中的hash,map等结构相似。
下面介绍PHP中遍历关联数组的三种方法:
方法1:foreach
<?php $sports = array( 'football' => 'good', 'swimming' => 'very well', 'running' => 'not good'); foreach ($sports as $key => $value) { echo $key.": ".$value."<br />"; ?>
输出结果:
football: good
swimming: very well
running: not good
方法2:each
<?php $sports = array( 'football' => 'good', 'swimming' => 'very well', 'running' => 'not good'); while ($elem = each($sports)) { echo $elem['key'].": ".$elem['value']."<br />"; ?>
方法3:list & each
<?php $sports = array( 'football' => 'good', 'swimming' => 'very well', 'running' => 'not good'); while (list($key, $value) = each($sports)) { echo $key.": ".$value."<br />"; ?>
PHP 数组遍历方法大全(foreach,list,each)
声明:登载此文出于传递更多信息之目的,并不意味着赞同其观点或证实其描述。
Reply on: @reply_date@
@reply_contents@