Parse xml with php simple xml - php

Question

I have the following xml file:
<File>
<Function name="for">
<Function name="if">
<Function name="if">
</Function>
</Function>
<Function name="else">
</Function>
</Function>
</File>
I'm using php Simple xml parser to get all functions from this file and display them. What i want to get is something like this :
for{
if{
if{
}
}
else{
}
}
So to do that it is not sufficient to get all nodes that contain a function, i need to get the order as well.
I made a class called Function that have a list of functions:
class Function{
/**
* #var int
*/
private $id;
/**
* #var string
*/
private $name;
/**
* #ORM\OneToMany(targetEntity="Function")
*/
private listFunctions;
Now every function can have nested functions.
My parsing is as follows:
$xml = simplexml_load_file('file.xml') or die("Error: Cannot create object");
$functions = array();
foreach ($xml->->File->children() as $f) {
// Iterate over <Function> tags under <File> tag (level-1 functions)
$function = new Function();
$function->setName($f['name']);
if(isset($f->Function)) {
foreach($f->children() as $cf){
//Iterate over level-2 functions
$cfunction = new Function();
$cfunction->setName($cf['name']);
$f->addListFunctions($cfunction);
}
}
$functions[] = $function;
}
This example works perfectly if I have two levels of nested functions, it will display the following:
for{
if{
}
else{
}
}
But I don't know hwo many levels I have, so I need to do it in a generic way.
I think the solution is to use a recursive function, but I'm not used to it, and I don't know how to start, or even if it's the right path to follow.
Any idea ?