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：

 <?php
 $arr = ['Boy','Girl'];
 while(list($key,$value) = each($arr)){
     echo 'key : value => ' .$key. ' : ' .$value;
     echo "\n";
     if(mt_rand(0,1) >= 0.5){
         break;
     }
 }
 $sex = current($arr);
 if($sex){
     echo "Hi,Zby! It's a $sex!\n";
     echo 'You are kidding me.It must not be a Boy!';
 }else{
     echo "It's God Like!";
 }