PHP - Codeigniter - How to delete file with some name -

i have image files name this:
200x200-myimage1.jpg,
300x300-myimage1.jpg,
200x200-myimage2.jpg.

in location uploads/thumbs/thread/

i want delete file contain name of myimage1.jpg.

i have done using glob hsz answered this:

$image_name = "myimage1.jpg"; foreach(glob('./uploads/thumbs/thread/'.$image_name) $rows) {                     unlink($rows);         } 

but doesn't work.
me?

edit
solved
forget add * before $image_name. become this:
glob('./uploads/thumbs/thread/*'.$image_name)

to filter out files contain myimage1 in name, use glob

foreach (glob("*myimage1*") $filename) {     unlink($filename); }