echo 'SELECT ... FROM news WHERE id=".$id."'; // affiche : SELECT ... FROM news WHERE id=".$id."

echo 'SELECT ... FROM news WHERE id="'.$id.'"'; // affiche : SELECT ... FROM news WHERE id="36"

echo 'SELECT ... FROM news WHERE id='.$id; // affiche : SELECT ... FROM news WHERE id=36

	/* Modifier news */
	if(isset($_GET['modifier_news'])){
		$id = intval($data['id']);
		$news_query = mysql_query('SELECT * FROM news WHERE id=".$id."')
			or die('Erreur query');
		$data = mysql_fetch_assoc($news_query)
			or die('Erreur assoc');
	}
	/* Insertion de news */
	elseif(isset($_POST['titre']) && isset($_POST['content'])){
		$titre = $_POST['titre'];
		$contenu = $_POST['content'];
		
		if(empty($titre) || empty($contenu)){
			echo 'Un ou plusieurs champs sont vides.';
		}
		else{
			require 'config.php';
			mysql_connect(DB_HOST,DB_LOGIN,DB_PASS);
			mysql_select_db(DB_BDD);
			
			$_POST['content'] = htmlentities($_POST['content']);
			
			$titre_sql = mysql_escape_real_string($titre);
			$contenu_sql = mysql_escape_real_string($contenu);
			
			$insertion = mysql_query("INSERT INTO `news` (id,titre,contenu,categorie,timestamp,date) VALUES ('','$titre_sql','$contenu_sql','','','')")
				or die('Erreur SQL');
		}