PHP中如何遍历关联数组

PHP中如何遍历关联数组2014-08-31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

<？php$sports = array（"football" => "good","swimming" => "very well","running"=> "not good"）;foreach （$sports as $key => $value） {echo $key.": ".$value."<br/>";}？>

程序运行结果：

football: goodswimming: very wellrunning: not good

each

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

程序运行结果：程序运行结果：

football: goodswimming: very wellrunning: not good

list & each

<？php$sports = array（"football" => "good","swimming" => "very well","running"=> "not good"）;while （list（$key, $value） = each（$sports）） {echo $key.": ".$value."<br/>";}？>

程序运行结果：

football: goodswimming: very wellrunning: not good