<?php

$dir=$_POST['load'];

if (is_dir($dir)) {
    foreach (glob($dir . '/*') as $file) {
        $filestring = file_get_contents($file);
        preg_match('~-x(.*)-c~Uis', $filestring, $result);
        echo $file . "\t\t" . $result[1] . "\n";
    }
}