help with glob pattern

Question

It would be nice if someone could give me a regexp pattern for glob for getting below filenames:

1.jpg // this file
1_thumb.jpg
2.png // this file
2_thumb.pn         


        

Answer 1

foreach (glob('[0-9]*') as $filename) {
    if (strpos("$filename","_thumb") === FALSE){
        echo "$filename \n";
    }
}