JSON PHP中,Json字符串反序列化成对象/数组的方法

'jinan','henan'=>'zhengzhou','hebei'=>'shijiazhuang'); $jn_city = json_encode($city); //反编码json $fan_city = json_decode($jn_city,false);//第二个参数false则返回object类型，false可以默认不写 var_dump($fan_city);//object(stdClass)#1 (3) { ["shandong"]=> string(5) "jinan" ["henan"]=> string(9) "zhengzhou" ["hebei"]=> string(12) "shijiazhuang" } echo "
"; $fan_city = json_decode($jn_city,true);//第二个参数true则返回array类型 var_dump($fan_city);//array(3) { ["shandong"]=> string(5) "jinan" ["henan"]=> string(9) "zhengzhou" ["hebei"]=> string(12) "shijiazhuang" }

//json信息反编码

//不同php版本，对“纯json字符串”解析存在问题
//使用双引号定义的json字符串反编码操作变为null
//$jn = "{'name':'tom','age':'20','addr':'beijing'}";
//$fan_jn = json_decode($jn,true);
//var_dump($fan_jn);//NULL

//使用单引号定义的json字符串反编码操作会成功
$jn = '{"name":"tom","age":"20","addr":"beijing"}';
$fan_jn = json_decode($jn,true);
var_dump($fan_jn);