后端开发|php教程
PHP遍历关联数组的方法介绍
后端开发-php教程
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。
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下面介绍PHP中遍历关联数组的三种方法:
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foreach
good, swimming => very well, unning => ot good);foreach ($sports as $key => $value) { echo $key.": ".$value."
";}?>
程序运行结果:
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football: goodswimming: very wellrunning: not good
each
good, swimming => very well, unning => ot 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, unning => ot good);while (list($key, $value) = each($sports)) { echo $key.": ".$value."
";}?>
程序运行结果:
football: goodswimming: very wellrunning: not good