使用php问题创建JSON字符串

时间:2013-10-07 07:15:17

标签: php json

我想用这种结构创建一个JSON:

{"id":"ws",
 "data":[
   {"name":"it.geosolutions"},
   {"name":"cite"},
   {"name":"testwor"},
   {"name":"tiger"},
   {"name":"sde"},
   {"name":"topp"},
   {"name":"newwork"},
   {"name":"sf"},
   {"name":"nurc"}
 ]
}

我做:

function funcArray(){
 foreach ($ws as $item){
  $wsarray[] = '{"name":"'.$item->name.'"}';
 }  
 return $wsarray;
}

$json_data = array ('id'=>'ws','data'=>funcArray());
$json = json_encode($json_data);

我得到了:

{"id":"ws",
 "data":[
   "{\"name\":\"it.geosolutions\"}",
   "{\"name\":\"cite\"}",
   "{\"name\":\"testwor\"}",
   "{\"name\":\"tiger\"}",
   "{\"name\":\"sde\"}",
   "{\"name\":\"topp\"}",
   "{\"name\":\"newwork\"}",
   "{\"name\":\"sf\"}",
   "{\"name\":\"nurc\"}"
  ]
}

如何修复?

更新

我试过这个:

function funcArray(){
 foreach ($ws as $item){
   $wsarray[] = json_encode(array('name'=>$item->name));
 }  
 return $wsarray;
}

但是得到:

{"id":"ws","data":["{\"name\":\"it.geosolutions\"}","{\"name\":\"cite\"}","{\"name\":\"testwor\"}","{\"name\":\"tiger\"}","{\"name\":\"sde\"}","{\"name\":\"topp\"}","{\"name\":\"newwork\"}","{\"name\":\"sf\"}","{\"name\":\"nurc\"}"]}

怎么了?

3 个答案:

答案 0 :(得分:8)

不要以这种方式构建JSON。而是在PHP数组上使用json_encode

$arr = array(
"id" => "ws",
"data" => array(
  array("name" => "it.geosolutions"),
  array("name" => "cite"),
  array("name" => "testwor"),
  array("name" => "tiger"),
  array("name" => "sde"),
  array("name" => "topp"),
  array("name" => "newwork"),
  array("name" => "sf"),
  array("name" => "nurc")
));

echo json_encode($arr);

输出

{"id":"ws","data":[{"name":"it.geosolutions"},{"name":"cite"},{"name":"testwor"},{"name":"tiger"},{"name":"sde"},{"name":"topp"},{"name":"newwork"},{"name":"sf"},{"name":"nurc"}]}

要使用$ws数组,您可以执行以下操作:

echo json_data(array(
  "id" => "ws",
  "data" => array_map(function($item) { return array("name" => $item->name); }, $ws)
));
使用array_map这样的

注意需要>= PHP 5.3

答案 1 :(得分:1)

您需要先创建一个数组,然后使用json_encode创建json输出。不要硬编码任何json ..

答案 2 :(得分:1)

不是在函数funcArray中构建json字符串,而是为什么不构建数组并将其返回

function funcArray(){
   foreach ($ws as $item){
       $wsarray[] = array("name"=>$item->name);
    }  
    return $wsarray;
  }

 $json_data = array ('id'=>'ws','data'=>funcArray());
 $json = json_encode($json_data);