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Homephp教程php手册在CakePHP中利用Javascript Helper把PHP数组转换为JSON

在Google Groups中一个经常问到的问题是:如何把一个PHP数组传递给 Javascript.答案是把PHP数组转换为JSON,有几个解决办法:包括第三方PHP 类库,PHP5 JSON扩展(php_json.dll 或则 json.so). 但是推荐的方法是使用CakePHP的javascript Helper.作为一个纯PHP的解

 在Google Groups中一个经常问到的问题是:如何把一个PHP数组传递给
Javascript.答案是把PHP数组转换为JSON,有几个解决办法:包括第三方PHP
类库,PHP5 JSON扩展(php_json.dll 或则 json.so).
但是推荐的方法是使用CakePHP的javascript Helper.作为一个纯PHP的解决方法
它能够同时在PHP4和PHP5上工作

使用它像使用其他Helper一样简单,假设在你的控制器中有一些数组,把它们传递给
视图就可使用了.

好了,下面是一些代码片段和输出

控制器代码(PHP):     

      $my_array = array(1,2,3,4,5);
      
$my_array2= array('one'=>'1','two'=>'2','3'
);
      
$this->set(compact('my_array','my_array2'));

视图代码(PHP):     

echo $javascript->Object($my_array);
echo $javascript->Object($my_array2);

输出为(Javascript):

 [1,2,3,4,5]
 {
"one":1, "two":2, "0":3}


更复杂的Cheesecake-Photoblog findAll方法的输出结果如下(PHP): 

      Array
      (
          [
0=> Array
              (
                  [Photo] 
=> Array
                      (
                          [id] 
=> 2
                          [filename] 
=> 1180944624_3dgreen.png
                          [title] 
=>
 3D Green
                          [created] 
=> 2007-06-04 13:40:00

                      )
              )
       
          [
1=> Array
              (
                  [Photo] 
=> Array
                      (
                          [id] 
=> 1
                          [filename] 
=> 1180938295_FreshFlower.jpg
                          [title] 
=>
 Fresh Flower
                          [created] 
=> 2007-06-04 11:54:00

                      )
              )
      )

 JSON结果:     

[{"Photo":{"id":2"filename":"1180944624_3dgreen.png""title":"3D Green""created":"2007-06-04 13:40:00"}}, {"Photo":{"id":1"filename":"1180938295_FreshFlower.jpg""title":"Fresh Flower""created":"2007-06-04 11:54:00"}}] 

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