PHPCompiler

<!DOCTYPE html>
<html>
<head>
    <title><?php echo date("H:i:s")?>|tempEngine Compiler</title>
</head>
<body>
<?php
    $time = -microtime(true);

  echo "Start Compiling at ".date("d.m.Y, H:i:s | U")."<br>";

    $version = file_get_contents("version.txt");
    $version++;

  $dir = array_diff(scandir("src/"), array('..', '.'));
    $out = "// BUILD: $version \n// Compiled: ".date("d.m.Y, H:i:s | U")."\n\nbuild = $version+' | ".date("d.m.y, H:i:s | U")." (PHPCompiler)'\n\n";
    echo "Including Files: <select><option>-=List of included files=-";
    foreach ($dir as $x) {
        echo "<option>".$x."</option>";
        $out .=  "//File: $x\n\n".file_get_contents("src/$x")."\n\n";
    }
    file_put_contents("a.js",$out);
    file_put_contents("version.txt",$version);
    $time += microtime(true);
    echo "</select><br>Script compiled without error! Time: ".round($time,4)." s ; Filesize: ".strlen($out)." bytes<br>";
    echo "<textarea style='width: 100%;height: 512px;'>$out</textarea>";
?>
</body>
</html>