How to Convert stdClass Objects to Custom Classes in PHP?

Converting stdClass Objects to Custom Classes

In a scenario where a third-party storage system returns only stdClass objects, casting them into full-fledged objects of a specific class becomes necessary. However, PHP does not provide a straightforward casting method for such conversions.

Type Juggling

PHP's type juggling capabilities allow for specific conversions, such as:

• (int) or (integer) for integer
• (bool) or (boolean) for boolean
• (float), (double), or (real) for float
• (string) for string
• (array) for array
• (object) for object
• (unset) for NULL (PHP 5)

These conversions are invaluable for working with stdClass objects, but they do not directly create instances of a specific class.

Custom Mapper

For comprehensive conversion, a Mapper class can be created to perform the casting from stdClass to a target class. This involves defining methods that translate each property of the stdClass object into the corresponding property in the target class.

Hackish Solution (Caution Advised)

As a workaround, the following code can be adapted to "pseudocast" arrays and objects to instances of a specific class:

function arrayToObject(array $array, $className) {
    return unserialize(sprintf(
        'O:%d:"%s"%s',
        strlen($className),
        $className,
        strstr(serialize($array), ':')
    ));
}

function objectToObject($instance, $className) {
    return unserialize(sprintf(
        'O:%d:"%s"%s',
        strlen($className),
        $className,
        strstr(strstr(serialize($instance), '"'), ':')
    ));
}

This solution modifies the serialized representation of the data to represent the target class. However, it is recommended to use this approach with caution due to potential side effects.

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