Q:

Delete a file which I only know the first part of the name in PHP

I want to delete a file which I only know the first part of the name. 
    unlink('./upload/nav_thumbs/project-'  .the rest);

'the rest' = can be anything.  Only thing I got is that is has a .jpg extension
Is there a way to do this?  

A:

$possibleFiles = glob('./upload/nav_thumbs/project-*.jpg');
foreach ($possibleFiles as $file) {
    if (thisIsTheFileYouAreLookingFor($file)) {
        unlink($file);
    }
}

http://php.net/glob

