How php converts an empty array to an object

This article is about how php converts empty arrays into objects. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

In php, you can use the json_encode () function to convert an empty array into an object, with the syntax "json_encode ($arr,JSON_ FORCE_OBJECT)" or "json_encode ($arr,JSON_UNESCAPED_UNICODE)".

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Php converts empty arrays to objects

Method 1: use JSON_FORCE_OBJECT

$arr = []; $jsonRet = json_encode ($arr, JSON_FORCE_OBJECT); var_dump ($jsonRet)

Cons: all data will become jsonObject

$arr = ['jsonArray' = > [' 21,'12,'13], 'jsonObject' = > []]; $jsonRet = json_encode ($arr,JSON_FORCE_OBJECT); print_r ($jsonRet)

Output:

{"jsonArray": {"0": "21", "1": "12", "2": "13"}, "jsonObject": {}}

You can see that the original jsonArray has also been jsonObjected.

Method 2: (recommended)

Use ArrayObject

$array = new ArrayObject (); var_dump (json_encode ($array,JSON_UNESCAPED_UNICODE))

Output:

Thank you for reading! This is the end of the article on "how php converts empty arrays into objects". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!