Use __get() and __set() to dynamically access class fields in PHP
Description
The following code shows how to use __get() and __set() to dynamically access class fields.
Example
<?php//w w w. j a v a 2 s. c o m
class Car {
public $manufacturer;
public $model;
public $color;
private $_extraData = array();
public function __get( $propertyName ) {
if ( array_key_exists( $propertyName, $this->_extraData ) ) {
return $this->_extraData[$propertyName];
} else {
return null;
}
}
public function __set( $propertyName, $propertyValue ) {
$this->_extraData[$propertyName] = $propertyValue;
}
}
$myCar = new Car();
$myCar->manufacturer = "Volkswagen";
$myCar->model = "Beetle";
$myCar->color = "red";
$myCar->engineSize = 1.8;
$myCar->otherColors = array( "green", "blue", "purple" );
echo "<p>My car's manufacturer is " . $myCar->manufacturer . ".</p>";
echo "<p>My car's engine size is " . $myCar->engineSize . ".</p>";
echo "<p>My car's fuel type is " . $myCar->fuelType . ".</p>";
echo "<h2>The \$myCar Object:</h2><pre>";
print_r( $myCar );
echo "</pre>";
?>
The code above generates the following result.
