yii2 php object to array

In the Yii2 framework, we often need to convert between objects and arrays. In PHP, arrays and objects are very important data types. Arrays can store different types of data and can be accessed through indexes. Object is a special data type that can contain properties and methods. In the Yii2 framework, we can use some functions to convert between objects and arrays.

1. PHP built-in functions

In PHP, we can use the built-in functions get_object_vars() and json_decode() to Convert an object to an array.

• get_object_vars()Function: Returns an associative array consisting of object attributes and attribute values.

$data = new YourDataModel();
$array = get_object_vars($data);

• json_decode()Function: Convert JSON format string to PHP object or array.

$data = new YourDataModel();
$json = json_encode($data);
$array = json_decode($json, true);

2. ArrayHelper class in Yii2

The Yii2 framework provides a very convenient class ArrayHelper, which contains a series of methods to perform array operations. . This includes conversion between objects and arrays.

• toArray()Method: Convert an object to an array.

$data = new YourDataModel();
$array = \yii\helpers\ArrayHelper::toArray($data);

• toObject()Method: Convert an array to an object.

$array = ['name' => 'Tom', 'age' => 30];
$obj = \yii\helpers\ArrayHelper::toObject($array);

3. Custom method

We can also customize a method to convert between objects and arrays.

function objectToArray($obj)
{
    $array = [];

    if (is_object($obj)) {
        $obj = get_object_vars($obj);
    }

    if (is_array($obj)) {
        foreach ($obj as $key => $value) {
            $array[$key] = objectToArray($value);
        }
    } else {
        $array = $obj;
    }

    return $array;
}

function arrayToObject($array)
{
    $object = new stdClass();
    if (!is_array($array)) {
        return $array;
    }

    foreach ($array as $key => $value) {
        $object->$key = arrayToObject($value);
    }

    return $object;
}

Usage example:

$data = new YourDataModel();
$array = objectToArray($data);

$array = ['name' => 'Tom', 'age' => 30];
$obj = arrayToObject($array);

Summary:

In the Yii2 framework, we can use PHP built-in functions and the ArrayHelper class provided in Yii2 to perform communication between objects and arrays conversion. If more flexible operations are needed, we can also customize methods to achieve conversion. No matter which method you use, it's important to understand the similarities and differences between objects and arrays, and how to convert them. In this way, we can better use the various functions of the Yii2 framework.

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