Home > php教程 > php手册 > PHP 数组遍历方法大全(foreach,list,each)

PHP 数组遍历方法大全(foreach,list,each)

WBOY
Release: 2016-06-06 20:34:35
Original
1048 people have browsed it

php下最灵活的东西都是数组,很多数据都是通过数组的方式显示,这里整理下数组的遍历方法,大家可以根据需要选用。

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:

方法1:foreach

代码如下:
$sports = array(
'football' => 'good',
'swimming' => 'very well',
'running' => 'not good');
foreach ($sports as $key => $value) {
echo $key.": ".$value."
";
?>

输出结果:

football: good
swimming: very well
running: not good

方法2:each

代码如下:
$sports = array(
'football' => 'good',
'swimming' => 'very well',
'running' => 'not good');
while ($elem = each($sports)) {
echo $elem['key'].": ".$elem['value']."
";
?>


方法3:list & each
代码如下:
$sports = array(
'football' => 'good',
'swimming' => 'very well',
'running' => 'not good');
while (list($key, $value) = each($sports)) {
echo $key.": ".$value."
";
?>
Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Recommendations
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template