PHP ReflectionClass::getConstructor() gives a class's constructor.
If a child class has no constructor defined but its parent class does, then the parent constructor is returned.
Is there a way to distinguish whether the constructor came from a child class or its parent?
You can use the getParentClass method of the ReflectionClass class to determine the constructor function of each parent class by using recursion.
<?php
class point {
function __construct($x) {$this->x=$x;}
}
class point2 extends point{
function __construct($x,$y) {$this->x=$x;$this->y=$y;}
}
class point3 extends point2 {
function __construct($x,$y,$z) {$this->x=$x;$this->y=$y;$this->z=$z;}
}
$ref= new ReflectionClass('point3');
do {
$constructor = $ref->getConstructor();
var_dump($constructor);}
while ($ref = $ref->getParentClass());
?>
This outputs:
object(ReflectionMethod)#3 (2) {
["name"]=>
string(11) "__construct"
["class"]=>
string(6) "point3"
}
object(ReflectionMethod)#2 (2) {
["name"]=>
string(11) "__construct"
["class"]=>
string(6) "point2"
}
object(ReflectionMethod)#4 (2) {
["name"]=>
string(11) "__construct"
["class"]=>
string(5) "point"
}
and by hashing out the various __construct functions, you can determine which ones are called.