If you want to create specialized versions of the built-in classes (say, for creating colorized HTML when being exported, having easy-access member variables instead of methods or having utility methods), you may go ahead and extend them.
Приклад #1 Extending the built-in classes
<?php
/**
* My Reflection_Method class
*/
class My_Reflection_Method extends ReflectionMethod
{
public $visibility = array();
public function __construct($o, $m)
{
parent::__construct($o, $m);
$this->visibility = Reflection::getModifierNames($this->getModifiers());
}
}
/**
* Demo class #1
*
*/
class T {
protected function x() {}
}
/**
* Demo class #2
*
*/
class U extends T {
function x() {}
}
// Print out information
var_dump(new My_Reflection_Method('U', 'x'));
?>Поданий вище приклад виведе щось схоже на:
object(My_Reflection_Method)#1 (3) {
["visibility"]=>
array(1) {
[0]=>
string(6) "public"
}
["name"]=>
string(1) "x"
["class"]=>
string(1) "U"
}
If you're overwriting the constructor, remember to call
the parent's constructor before any code you insert.
Failing to do so will result in the following:
Fatal error: Internal error: Failed to retrieve the reflection object