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中遍历关联数组的几种方法：
方法1：foreach
foreach()是一个用来遍历数组中数据的最简单有效的方法。
<?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 />";
?>方法4：while() 和 list()，each()配合使用。
<?php
$urls= array('aaa','bbb','ccc','ddd');
while(list($key,$val)= each($urls)) {
echo "This Site url is $val.<br />";
}
?>显示结果：
This Site url is aaa This Site url is bbb This Site url is ccc This Site url is ddd
方法5：for()
<?php
$urls= array('aaa','bbb','ccc','ddd');
for ($i= 0;$i< count($urls); $i++){
$str= $urls[$i];
echo "This Site url is $str.<br />";
}
?>显示结果：
This Site url is aaa This Site url is bbb This Site url is ccc This Site url is ddd
以上就是php遍历关联数组方法大全(foreach,list,each,list)的详细内容，更多请关注php中文网其它相关文章！