Question

hey guys!
I have a script that should add images into the database. It does that. The only problem is that it does not only adds new images but also adds existing ones.
Im sure its a really simple task for you, for me its too much!

So again this code should check if an entry exists and then add the image if it does not exists.
Thank you 🙂

    <?php

include('mysql.php');

if ($handle = opendir('images')) {

    /* This is the correct way to loop over the directory. */
    while (false !== ($file = readdir($handle))) {
        if($file!='.' && $file!='..') {
            $images[] = "('".$file."')";
        }
    }

    closedir($handle);
}

$query = "INSERT INTO images (filename) VALUES ".implode(',', $images)." ";
if (!mysql_query($query)) {
    print mysql_error();
}
else {
    print "finished installing your images!";
}


?>

Answer 1

You can make the filename field unique (CREATE UNIQUE INDEX filename_idx ON images (filename)) then simply replace INSERT INTO images with INSERT IGNORE INTO images.

As an added bonus, you’ll now also have the filename field indexed, which will speed up SELECTs by filename.