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PHP遍历关联数组的几种方法_PHP教程

程序员文章站 2022-05-23 18:54:07
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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: good
swimming: very well
running: 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:

football: good
swimming: very well
running: 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: good
swimming: very well
running: not good

www.bkjia.comtruehttp://www.bkjia.com/PHPjc/752443.htmlTechArticle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...
相关标签: PHP 遍历数组