with id as comment

adminCards.php

@@ -40,15 +40,17 @@ else{
 		$export_txt = "<?php echo \"<h2>User created cards</h2>\";\n";
 		$export_txt .= "\$nb=0;\ntry{\n";
 	}
-	foreach ($card_ids as $card_id){
-		$card = new Card($card_id);
-		if($admin){
-			$card->set_view("./views/card.inline.admin.display.php");
-			echo $card;
-		}
-		if($export){
-			$card->set_view("./views/card.export.php");
-			$export_txt .= $card;
+	if($card_ids){
+		foreach ($card_ids as $card_id){
+			$card = new Card($card_id);
+			if($admin){
+				$card->set_view("./views/card.inline.admin.display.php");
+				echo $card;
+			}
+			if($export){
+				$card->set_view("./views/card.export.php");
+				$export_txt .= $card;
+			}
 		}
 	}
 	if($export){

views/card.export.php

 <?php /* Global $card sent by Card class (models/card.class.php) → $res used then in Card class*/
 	include('./languages/language.php');
-	$res = "\n\$tempObj = new Card('".$card->get_lang()."',  NULL, \"".$card->get_level().'", "'.$card->get_cat().'", "1", "'.$card->get_word().'",'."\n\t".' array("'.implode('","', $card->get_forbidden_words()).'"),'."\n\t".' array("'.implode('","', $card->get_themes()).'"));'."\n";
+	$res = "\n//".$card->get_id()."\n\$tempObj = new Card('".$card->get_lang()."',  NULL, \"".$card->get_level().'", "'.$card->get_cat().'", "1", "'.$card->get_word().'",'."\n\t".' array("'.implode('","', $card->get_forbidden_words()).'"),'."\n\t".' array("'.implode('","', $card->get_themes()).'"));'."\n";
 	$res .= "\t\$tmpObj->store(true);\$nb++;";
 ?>