PHP中foreach遍历的不仅仅是数组

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

';//1 2 3 4 5 6 7 8 9 10 11 } ?>

 $v) { echo 'key',$a,'== value',$v,'
'; } // key0== value1 // key1== value2 // key2== value3 // key3== value4 // key4== value7 // key5== value8 // key6== value9 // key7== value10 // key8== value11 ?>

//定义类 class Man{ public $name = 'LiLei'; public $height = 178; public $weight = 140; protected $age = 30; private $money = 1000; } //实例化 $m = new Man(); //遍历 foreach($m as $k => $v){ echo $k . ' : ' . $v . '
'; //$k为属性名，$v为属性值 } /* name : LiLei height : 178 weight : 140 */