foreach ud fra dato

foreach(array_filter(glob('*.jpg'), function($f) { return filemtime($f) < time() - 7*24*60*60; }) as $filename) {
    ...
}

<?php
$time_ref = time() - (7*24*60*60);
foreach (glob("*.*") as $filename) {
    if(filemtime($filename) - $time_ref>0 ){
        echo "$filename size " . filesize($filename) . "<br>\n";   
    }
    else{
        echo $filename . " for gammel <br>\n";
    }
}
?>