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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