php和xml中的错误

I know i have bothered all of you with my questions but i have a question about php and xml

i am trying to store all the values of the pages in xml so i would create a multilingual website

after searching i have got to a way but and i tried to alter it a little bit there is my xml files:

en.xml:

<?xml version="1.0" encoding="UTF-8"?>
<main>

    <!--Page Titles-->
    <freeEaHdr>
        <![CDATA[Get in the game!]]>
    </freeEaHdr>
    <freeEaSubhdr>
        <![CDATA[Load up your Xperia™ PLAY with 4 exciting EA titles for<span style="color:#ff9c00;"> FREE</span>]]>
    </freeEaSubhdr>
    <!--Page Titles-->

</main>

and there is my ar.xml

<?xml version="1.0" encoding="UTF-8"?>
<main>

    <!--Page Titles-->
    <freeEaHdr>
        <![CDATA[ادخل اللعبة]]>
    </freeEaHdr>
    <freeEaSubhdr>
        <![CDATA[حمل الاكسبيريا الان]]>
    </freeEaSubhdr>
    <!--Page Titles-->

</main>

and i have created an select_lang.php

<?php
function select_lang(){
    if(isset($_GET['lang'])){
        $lang = $_GET['lang'];
        if($lang == "en"){
            $xml = simplexml_load_file("en.xml");
        } else{
            $xml = simplexml_load_file("ar.xml");
        } 
    } else {
            $xml = simplexml_load_file("en.xml");
    }
    return $xml;
}
?>

and the final page was index.php

<?php
include("select_lang.php");
select_lang();
?>
<div><?php echo $xml->freeEaHdr; ?></div>
<div><?php echo $xml-> freeEaSubhdr; ?></div>
<a href="?lang=en">english</a>
<a href="?lang=ar">arabic</a>

now of course i get errors in index.php as for the main xml variable is not defined so if anybody has a solution

Thanks in advance

and sorry for bothering you

Your select_lang() function returns the created SimpleXML object $xml. You then try to use this object in your index.php file, but you haven't actually assigned the return value of select_lang() to anything.

Simply doing

$xml = select_lang();

instead of

select_lang();

will let you actually use the returned XML object in your index.php file.

try to:

<?php
include("select_lang.php");
$xml = select_lang(); //change this line
?>