How to convert php object string array to json object array

In PHP, you can use objects to store some data, or you can use string arrays as a way of data storage. JSON is a commonly used data exchange format. Many times we need to convert objects or string arrays into Data in JSON format. This article will introduce how to convert PHP object and string arrays into JSON object arrays.

1. Convert PHP objects into JSON object arrays

To convert PHP objects into JSON object arrays, you need to use PHP’s built-in json_encode() function. This function serializes a PHP object into a JSON string.

The following is a simple PHP object:

class Person {
    public $name;
    public $age;
    public $gender;

    function __construct($name, $age, $gender) {
        $this->name = $name;
        $this->age = $age;
        $this->gender = $gender;
    }
}

$person = new Person('Tom', 18, 'male');

To convert the above PHP object to JSON, you can use the following code:

$json = json_encode($person);

If you want to convert multiple PHP objects For a JSON array, you can use the following code:

$persons = array(
    new Person('Tom', 18, 'male'),
    new Person('Lucy', 20, 'female'),
    new Person('John', 22, 'male')
);

$json = json_encode($persons);

At this time, the $json variable will store a JSON array containing three people.

2. Convert PHP array to JSON object array

If you want to convert an ordinary array in PHP into a JSON array, you can use the json_encode() function directly.

The following is a PHP array:

$fruits = array('apple', 'orange', 'banana');

To convert the above PHP array into a JSON array, you can use the following code:

$json = json_encode($fruits);

If you want to convert an associative array into JSON, You can use the following code:

$person = array(
    'name' => 'Tom',
    'age' => 18,
    'gender' => 'male'
);

$json = json_encode($person);

3. Convert PHP string array into JSON object array

When you need to convert PHP string array into JSON object array, you can use the following code:

$strArr = '["apple", "orange", "banana"]';
$jsonArr = json_decode($strArr);

In the above code, we use the json_decode() function to parse the string array into an array of JSON objects.

It should be noted that there are two types of arrays used in PHP: index arrays and associative arrays. There is only one array type in JSON, which is an object array. Therefore, when converting an array of strings in PHP to an array of JSON objects, you need to explicitly specify the type of the array.

The following is a PHP associative array:

$person = array(
    'name' => 'Tom',
    'age' => 18,
    'gender' => 'male'
);

To convert the above PHP associative array into a JSON object array, you can use the following code:

$strArr = '{"name": "Tom", "age": 18, "gender": "male"}';
$jsonArr = json_decode($strArr);

In the above code, we Use the json_decode() function to parse the string array into an array of JSON objects.

4. Conclusion

When converting PHP objects and arrays into JSON object arrays, you can use PHP's built-in json_encode() and json_decode() functions. It should be noted that PHP arrays are divided into index arrays and associative arrays, while JSON has only one array type, which is an object array. When converting a PHP string array to a JSON object array, you need to explicitly specify the array type.

The above is the detailed content of How to convert php object string array to json object array. For more information, please follow other related articles on the PHP Chinese website!