How to use JSON in PHP, Phpjson How to use _php tutorial

How to use JSON in PHP, how to use Phpjson

Starting with version 5.2, PHP native provides the Json_encode () and Json_decode () functions, which are used for encoding, which is used for decoding.
Json_encode ()
This function is primarily used to convert arrays and objects into JSON format.

Copy the Code code as follows:
$arr = Array (' a ' = = ' A ', ' B ' = ' B ', ' c ' = ' C ', ' d ' = ' d ', ' e ' = ' e ');
echo Json_encode ($arr);

Output Result:
JSON accepts only utf-8 encoded characters, and Json_encode () parameters must be utf-8 encoded.

Class Person {public   $name;   public $age;   public $height;   function __construct ($name, $age, $height)   {     $this->name = $name;     $this->age = $age;     $this->height = $height;     }  

Output Result:
When a property in a class is a private variable, it is not output.
Json_decode ()
This function is used to convert the JSON text to the appropriate PHP data structure.

Copy the Code code as follows:
$json = ' {' A ': ' Hello ', ' B ': ' World ', ' C ': ' Zhangsan ', ' d ': ', ' E ': 170} ';
Var_dump (Json_decode ($json));

Output Result:
Typically, Json_decode () always returns a PHP object.
To an array:

Copy the Code code as follows:
$json = ' {' A ': ' Hello ', ' B ': ' World ', ' C ': ' Zhangsan ', ' d ': ', ' E ': 170} ';
Var_dump (Json_decode ($json, ture));

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