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PHP遍历关联数组的步骤介绍

时间:2021-07-01 10:21:17 帮助过:24人阅读

PHP遍历关联数组的方法介绍

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:

foreach

 'good',    'swimming' => 'very well',    'running'  => 'not good'	);	foreach ($sports as $key => $value) {    echo $key.": ".$value."
";}?>


程序运行结果:

football: goodswimming: very wellrunning: not good


each

 'good',    'swimming' => 'very well',    'running'  => 'not good'	);	while ($elem = each($sports)) {    echo $elem['key'].": ".$elem['value']."
";}?>



程序运行结果:程序运行结果:

football: goodswimming: very wellrunning: not good


list & each

 'good',    'swimming' => 'very well',    'running'  => 'not good'	);	while (list($key, $value) = each($sports)) {    echo $key.": ".$value."
";}?>


程序运行结果:

football: goodswimming: very wellrunning: not good



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