PHP数组遍历，for|while&each的组合使用类似foreach

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[PHP] 纯文本查看 复制代码

<?php

	$array = array("one"=>"a","two"=>"b","three"=>"c","five"=>"d");
	
	echo "<pre>";

	// For负责循环
	$count = count($array);
	for ($i = 0; $i < $count; $i++){
		// each负责输出，输出的值为单个元素的属性集
		// 每次循环each都会自动移向下一个元素
		$arr = each($array);
		// 输出的属性性包括4个元素，分别为键值的两种表现形式
		print_r($arr);
	}
	
	// 如果each下移到最后一个元素，再调用each则会返回false
	// 因此用while循环更为简单
	while($b = each($array)){
		print_r($b);
	}

结果输出：

[HTML] 纯文本查看 复制代码

Array
(
    [1] => a
    [value] => a
    [0] => one
    [key] => one
)
Array
(
    [1] => b
    [value] => b
    [0] => two
    [key] => two
)
Array
(
    [1] => c
    [value] => c
    [0] => three
    [key] => three
)
Array
(
    [1] => d
    [value] => d
    [0] => five
    [key] => five
)