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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:

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