How to convert empty array to object in php

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)".

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

php will empty array Convert to object

Method 1:Use JSON_FORCE_OBJECT

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

Disadvantages: 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 The original jsonArray has also been jsonObjectified

Method Two: (Recommended)

Use ArrayObject

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

Output:

Recommended learning: "PHP Video Tutorial 》

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