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。
'good',
'swimming' => 'very well',
'running' => 'not good');
foreach ($sports as $key => $value) {
echo $key.": ".$value."
";
?>输出结果:
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football: good swimming: very well running: not good
方法2:each
'good',
'swimming' => 'very well',
'running' => 'not good');
while ($elem = each($sports)) {
echo $elem['key'].": ".$elem['value']."
";
?>方法3:list & each
'good',
'swimming' => 'very well',
'running' => 'not good');
while (list($key, $value) = each($sports)) {
echo $key.": ".$value."
";
?>方法4:while() 和 list(),each()配合使用。
";
}
?>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()
";
}
?>显示结果:
This Site url is aaa This Site url is bbb This Site url is ccc This Site url is ddd











