function listFile($dir, $file_type)
 {
 chdir($dir);
 if (!$file_type)
 $ls_str = " ls -R * ";
 else
 $ls_str = " ls -R *." . $file_type;

 $fp = popen($ls_str, "r");
 while(!feof($fp)){
 $line = fgets($fp,50);
 $line = trim($line);

 if(substr($line,strlen($line)-1,1) == ":"){ //디렉토리 처리부분
$subdir = $line;
 $subdir = substr($subdir,0,strlen($line)-1) . "/";
 }

 $htmlfile = explode(".",$line); //html파일 처리부분
if($htmlfile[1] == "html"){
 $fullpath = $subdir . $line;
 }
 }
 pclose($fp);
 return $fullpath;
 }