How to use php json_encode

In current interface development, there are very few xml formats, and most of them have been replaced by json. PHP, which is known as a language specially developed for interfaces, naturally has its powerful characteristics. That is its built-in function json_encode.

The function prototype is function json_encode($value,$option=0)

where $value is the data we want to convert to json. It can be said that the array and object. (The requirement is utf8 encoding)

$option is the conversion parameter. A binary mask composed of the following constants:

JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT, among which we often use the JSON_FORCE_OBJECT parameter, which is to force the data to be converted to j son object .

Let’s take an example below

$arr = ['name'=>'梦回故里','age'=>'18'];
die(json_encode($arr));

The execution result is:

class A{
      public $name = "";
      public $age = "";
  }
  $a = new A();
  $a->name = "梦回故里";
  $a->age= "18";
die(json_encode($a));

This is the result of my operation.

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