php get parent class file path

example

index.php //I know where this file is

$class = new childclass();
$class->__initComponents();

somefile.php //I know where this file is

Class childclass extends parentclass {

}

someparentfile.php // I don't know where this file is

Class parentclass {
 开发者_运维问答 function __initComponents(){
    //does something
  }
}

I need to find out where someparentfile.php is.

reason:

I am debugging some difficult php code that someone else wrote, I need to find out what file contains the code that defines a class parameter.

I found it as far as a class method calling a function that does this:

$class->__initComponents();//the parameter is defined somewhere in there

The problem is that this function is within a parent class "MyClass" of the above $class, and I have no idea where the parent class is.

is there a way or some debug function by which I can find out the location of this parent class or at least where the parameter was defined?

p.s. downloading the whole application and then using text search would be unreasonable.

---

You can use Reflection

$object = new ReflectionObject($class);
$method = $object->getMethod('__initComponents');
$declaringClass = $method->getDeclaringClass();
$filename = $declaringClass->getFilename();

For further information, what is possible with the Reflection-API, see the manual

however, for the sake of simplicity, I suggest to download the source and debug it local.

---

   $object = new ReflectionObject($this); // Replace $this with object of any class.

   echo 'Parent Class Name: <br>';
   echo $object->getParentClass()->getName();

   echo '<br>Parent Class Location: <br>';
   echo $object->getParentClass()->getFileName();