ReflectionClass::getMethods() sorts the methods by class (lowest in the inheritance tree first) then by the order they are defined in the class definition:
<?php
class A {
public function method1() {
}
public function method2() {
}
}
class B extends A {
public function method3() {
}
public function method4() {
}
}
$class = new ReflectionClass('B');
print_r($class->getMethods());
?>
This will output:
Array
(
[0] => ReflectionMethod Object
(
[name] => method3
[class] => B
)
[1] => ReflectionMethod Object
(
[name] => method4
[class] => B
)
[2] => ReflectionMethod Object
(
[name] => method1
[class] => A
)
[3] => ReflectionMethod Object
(
[name] => method2
[class] => A
)
)