[英]How do you list child methods of a class from a parent class in PHP without statics?
假設這樣的類結構:
class A {
function __construct() {
$methods_get_class = get_class_methods(get_class());
$methods_get_called_class = get_class_methods(get_called_class());
// The same methods are often the same
// So you may not be able to get the list
// of the methods that are only in the child class
}
}
Class B extends A {
function __construct() {
parent::__construct();
}
}
您將如何列出僅在子類中而不在父類中的方法?
可以做到這一點的一種方法是通過ReflectionClass
。
$child_class_name = get_called_class();
$child_methods = (new ReflectionClass($child_class_name))->getMethods();
$child_only_methods = [];
foreach($child_methods as $object){
// This step allows the code to identify only the child methods
if($object->class == $child_class_name){
$child_only_methods[] = $object->name;
}
}
使用ReflectionClass可以檢查子類,而不必更改子類或引入靜態方法或變量或使用后期靜態綁定。
但是,它確實帶來了開銷,但是解決了上述技術問題。
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