PHP each

1.函数的作用：遍历数组元素

2.函数参数：

　　@params array &$array

3.例子：

 1 <?php
 2 $arr = [‘Boy‘,‘Girl‘];
 3 while(list($key,$value) = each($arr)){
 4     echo ‘key : value => ‘ .$key. ‘ : ‘ .$value;
 5     echo "\n";
 6     if(mt_rand(0,1) >= 0.5){
 7         break;
 8     }
 9 }
10 $sex = current($arr);
11 if($sex){
12     echo "Hi,Zby! It‘s a $sex!\n";
13     echo ‘You are kidding me.It must not be a Boy!‘;
14 }else{
15     echo "It‘s God Like!";
16 }