js php 数组比较

  $a=array(1,2,3);  $b=array(1,2,3);  echo ($a==$b);  //output 是1  如果是 javascript 呢：请看以下代码返回的：  <script type="text/javascript">      var a=['a','b','c'];      var b=['a','b','c'];      console.log(a==b);  //output 是false  </script>

      var a=['a','b','c'];      var b=a;      console.log(a==b);   //outupt 是true

 <?php $a=array(1,2,3); $b=$a; $b[]=6; print_r($a); echo '<br/>'; print_r($b); //Array ( [0] => 1 [1] => 2 [2] => 3 )  //Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 6 )  js代码：      var a=['a','b','c'];      var b=a;      b[3]='d';      console.log(a);      console.log(b);      //output       //["a", "b", "c", "d"] index12.html:12      //["a", "b", "c", "d"] index12.html:13