PHPでのJSONメソッドの使い方

$arr = array ('a'=>'a','b'=>'b','c'='c','d'=>'d','e'='e'); echo json_encode($arr);

class person { public $name; public $age; public $height; function __construct($name,$age,$height) { $this->name = $name; $this->age = $age; $this->height = $height; } } $obj = new person("zhangsan",20,100); $foo_json = json_encode($obj); echo $foo_json;

$json = '{"a":"hello","b":"world","c":"zhangsan","d":20,"e":170}'; var_dump(json_decode($json));

$json = '{"a":"hello","b":"world","c":"zhangsan","d":20,"e":170}'; var_dump(json_decode($json,ture));