if (file_exists($chemin_decompression.'infos.xml')) {
$xml = simplexml_load_file($chemin_decompression.'infos.xml');
} else {
exit('Echec lors de l\'ouverture du fichier infos.xml.');
}

$minuscules = Array("i","n","f","o","s");
$majuscules = Array("I","N","F","O","S");

$ini = "InfOs";

$final = str_replace($majuscules,$minuscules,$ini);
echo $final;

for ($i=0; $i<sizeof($list); $i++) {

for(reset($list[$i]); $key = key($list[$i]); next($list[$i])) {

echo "File $i / [$key] = ".$list[$i][$key]."<br>";

}

if(strstr($list[$i]['filename'],".xml"))

echo "<b><br>g trouvé le XML !<br></b>";

echo "<br>";
}