How to convert php object array to json string array

In PHP programming, we often need to convert an object array into a JSON string array for data transfer or storage. In this article, I will show you how to convert an array of objects to a JSON string array using built-in functions in PHP.

First, we need to create an array containing objects. An example array can be created with the following code:

$data = [
    [
        'name' => 'Tom',
        'age' => 20,
        'address' => 'Beijing',
    ],
    [
        'name' => 'Jerry',
        'age' => 22,
        'address' => 'Shanghai',
    ],
];

At this point, the $data array contains two objects, each with a name, age and address three attributes.

Next, we can use the PHP built-in function json_encode() to convert the object array into a JSON string array. json_encode() The function can encode PHP variables into JSON format strings.

The following is a sample code to convert the $data array into a JSON string array:

$json_data = json_encode($data);

In the above code, json_encode() The function converts the $data array into a JSON string and assigns the result to the $json_data variable. Now, the data in the $json_data variable will be an array of JSON strings.

If you want an easier-to-read JSON string, you can set the second parameter of the json_encode() function to JSON_PRETTY_PRINT. This parameter will cause the json_encode() function to add indentation and formatting to the JSON string when it is generated.

Here is the sample code to convert the $data array into a JSON string array using the JSON_PRETTY_PRINT flag:

$json_data = json_encode($data, JSON_PRETTY_PRINT);

In the above code, $json_data The JSON string stored in the variable will have indentation and formatting.

In conclusion, converting an array of objects to an array of JSON strings is a very useful trick in PHP programming. Using the PHP built-in function json_encode(), we can easily convert an array containing objects into a JSON string array that can be passed and stored.

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