Php/docs/reflectionproperty.construct
ReflectionProperty::__construct
(PHP 5, PHP 7)
ReflectionProperty::__construct — Construct a ReflectionProperty object
参数
class- The class name, that contains the property.
name- The name of the property being reflected.
返回值
没有返回值。
错误／异常
Trying to get or set private or protected class property's values will result in an exception being thrown.
范例
Example #1 ReflectionProperty::__construct() example
<?phpclass Str{ public $length = 5;}// Create an instance of the ReflectionProperty class$prop = new ReflectionProperty('Str', 'length');// Print out basic informationprintf( "===> The%s%s%s%s property '%s' (which was %s)\n" . " having the modifiers %s\n", $prop->isPublic() ? ' public' : , $prop->isPrivate() ? ' private' : , $prop->isProtected() ? ' protected' : , $prop->isStatic() ? ' static' : , $prop->getName(), $prop->isDefault() ? 'declared at compile-time' : 'created at run-time', var_export(Reflection::getModifierNames($prop->getModifiers()), 1));// Create an instance of Str$obj= new Str();// Get current valueprintf("---> Value is: ");var_dump($prop->getValue($obj));// Change value$prop->setValue($obj, 10);printf("---> Setting value to 10, new value is: ");var_dump($prop->getValue($obj));// Dump objectvar_dump($obj);?>
以上例程的输出类似于：
===> The public property 'length' (which was declared at compile-time)
having the modifiers array (
0 => 'public',
)
---> Value is: int(5)
---> Setting value to 10, new value is: int(10)
object(Str)#2 (1) {
["length"]=>
int(10)
}
Example #2 Getting value from private and protected properties using ReflectionProperty class
<?phpclass Foo { public $x = 1; protected $y = 2; private $z = 3;}$obj = new Foo;$prop = new ReflectionProperty('Foo', 'y');$prop->setAccessible(true); /* As of PHP 5.3.0 */var_dump($prop->getValue($obj)); // int(2)$prop = new ReflectionProperty('Foo', 'z');$prop->setAccessible(true); /* As of PHP 5.3.0 */var_dump($prop->getValue($obj)); // int(2)?>
以上例程的输出类似于：
int(2) int(3)
