Andrey

$str = 'git -c user.email="email" -c user.name="login" commit -m "message"';
exec($str,$stdin,$stderr);

$catalog = new SimpleXMLElement(file_get_contents($file));
    foreach($catalog->stores->store as $arStore){
        $name = (string)$arStore['name'];
    }

<?xml version="1.0" encoding="UTF-8"?>
<catalog>
	<stores>
		<store uid="111" name="444"/>
		<store uid="222" name="555"/>
		<store uid="333" name="666"/>
	</stores>