PHP unlink error

I've got a problem with deleting the uploaded images.

It inserts in the database and uploads just fine but it won't delete.

Example: I have two tables, modelImages and Model. In Model I save the path of one main image, but in modelImage there can be a lot of them. The tables are linked via modelID.

This is an example how the path looks like:img/1/1/someImageName.png.

(first 1 - makerID, second 1 - modelID).

include('connect.php'); //connect to database
$modelID=$_GET['modelID'];
$makerID=$_GET['makerID'];
$path="img/".$makerID."/".$modelID."/";

if ($stmt = $mysqli->prepare("SELECT images FROM modelImages WHERE modelID='$modelID'")) {

    $stmt->execute();    
    $stmt->bind_result($images);

    while ($stmt->fetch()) {
        if($images!=$path){
            unlink($images);
        }
    }

    $stmt->close();

}
else {
    printf("Prepared Statement Error: %s\n", $mysqli->error);
}

if ($stmt = $mysqli->prepare("SELECT mainImage FROM model WHERE makerID='$makerID' AND modelID='$modelID'")) {    

    $stmt->execute();
    $stmt->bind_result($mainImage);

    while ($stmt->fetch()) {
        if($mainImage!=$path){
            unlink($mainImage);
        }
    }

    $stmt->close();

}
else {
    printf("Prepared Statement Error: %s\n", $mysqli->error);
}

When I just use the first code , it deletes all the images from the modelImages table and if I just use the second code, it deletes the one image from the model table.

But if I use them together I get the unlink() error:

Warning: unlink(img/1/1/image1.png) [function.unlink]: No such file or directory in /home/...
Warning: unlink(img/1/1/image2.png) [function.unlink]: No such file or directory in /home/...
Warning: unlink(img/1/1/image3.png) [function.unlink]: No such file or directory in /home/...
Warning: unlink(img/1/1/image4.png) [function.unlink]: No such file or directory in /home/...

Conclusion: The unlink won't work if I use both of the querys together.