如何在PHP中创建Javascript 2-d数组？

Question

I am trying to replicate the 2d array generation in java-script form the following PHP code I have written, I am feeling I am getting some misconception because I am not getting the expected result from my javascript. 我试图用java脚本形式复制2d数组生成我编写的以下PHP代码，我感觉我有一些误解，因为我没有从我的javascript获得预期的结果。 Help me out where I am doing it wrong and what is my misconception. 帮助我，我做错了什么，我的误解是什么。

PHP CODE PHP代码

<?php

    $checkArray = array();
    for($m=0; $m<3; $m++){
        for($n=0; $n<4; $n++ )
        {
            $checkArray[$m][$n] = "Inside_ ".$m." is ".$n;
        }
    }   

    var_dump($checkArray);
?>

JAVASCRIPT CODE JAVASCRIPT代码

<!DOCTYPE html>
<html lang="en">
<head>
<script>
        function ArrayFunction(){
            var checkArray = [];
            for(var m=0; m<3; m++){
               checkArray[m] = []; 
               for(var n=0; n<4; n++){
                checkArray[m][n] = "Inside " +m+ " is " + n ;
              }
            }
            for(var i = 0; i < checkArray.length; i++)
              console.log(checkArray[i]);
        }
</script>    
</head>
<body>
   The content of the document......
    <input id="clickMe" type="button" value="clickme" onclick="ArrayFunction();" />

</body>
</html>

After @sifriday suggestion, I moved the array initialization outside inner loop, 在@sifriday建议之后，我将数组初始化移到了内部循环之外，

Updated Question: But why do we have to initialize it everytime we need to expand the dimension unlike php 更新的问题：但是为什么我们每次需要扩展维度时都必须初始化它而不像php

Answer 1

Move your initialisation of the inner array outside the for loop, that should fix it. 将内部数组的初始化移到for循环之外，应该修复它。 Otherwise you're resetting it every time. 否则你每次都要重置它。 Like this: 像这样：

    function ArrayFunction(){
        var checkArray = [];
        for(var m=0; m<3; m++){

          // Move this to here!
          checkArray[m] = []; 

          for(var n=0; n<4; n++){

            checkArray[m][n] = "Inside " +m+ " is " + n ;
          }
        }
        for(var i = 0; i < checkArray.length; i++)
          console.log(checkArray[i]);
    }

如何在PHP中创建Javascript 2-d数组？

问题描述

1 个解决方案

解决方案1
3 已采纳 2014-11-16 19:39:00

如何在PHP中创建Javascript 2-d数组？

问题描述

1 个解决方案

解决方案1 3 已采纳 2014-11-16 19:39:00

解决方案1
3 已采纳 2014-11-16 19:39:00