1.foreach的格式

foreach (array_expression as $value)    statement foreach (array_expression as $key => $value)    statement

2.foreach對(duì)數(shù)組的遍歷

a.方式一：

<?php $arr = array(1, 2, 3, 4,7,8,9,10,11);  foreach($arr as $a) {     echo $a,'<br/>';//1 2 3 4 5 6 7 8 9 10 11 }  ?>

b.方式二：

<?php $arr = array(1, 2, 3, 4,7,8,9,10,11); foreach($arr as $a => $v) {     echo 'key',$a,'== value',$v,'<br/>'; } // key0== value1 // key1== value2 // key2== value3 // key3== value4 // key4== value7 // key5== value8 // key6== value9 // key7== value10 // key8== value11 ?>

3.foreach對(duì)對(duì)象的遍歷

遍歷對(duì)象，其實(shí)就是指將對(duì)象中的所有屬性（公有屬性）以鍵值對(duì)的形式取出并進(jìn)行訪問。

//定義類 class Man{     public $name = 'LiLei';     public $height = 178;     public $weight = 140;     protected $age = 30;     private $money = 1000; } //實(shí)例化 $m = new Man(); //遍歷 foreach($m as $k => $v){     echo $k . ' : ' . $v . '<br/>';		//$k為屬性名，$v為屬性值 } /* name : LiLei    height : 178    weight : 140  */

推薦：php視頻教程 php教程