파일첨부 관련 ..

<input type="file" name="ca_img2" id="ca_img2">

if ($_FILES['ca_img2']['name']) {	if($w == 'u' && $ca_img2) {        $file_img2 = $ca_img_dir.'/'.$ca_img2;        @unlink($file_img2);        delete_item_thumbnail(dirname($file_img2), basename($file_img2));    }    $ca_img2 = it_img_upload($_FILES['ca_img2']['tmp_name'], $_FILES['ca_img2']['name'], $ca_img_dir.'/'.$ca_id);}  // 상품이미지 업로드function it_img_upload($srcfile, $filename, $dir){    if($filename == '')        return '';     $size = @getimagesize($srcfile);    if($size[2] < 1 || $size[2] > 3)        return '';     if(!is_dir($dir)) {        @mkdir($dir, G5_DIR_PERMISSION);        @chmod($dir, G5_DIR_PERMISSION);    }     $pattern = "/[#\&\+\-%@=\/\\:;,'\"\^`~\|\!\?\*\$#<>\(\)\[\]\{\}]/";     $filename = preg_replace("/\s+/", "", $filename);    $filename = preg_replace( $pattern, "", $filename);     $filename = preg_replace_callback(                          "/[가-힣]+/",                          create_function('$matches', 'return base64_encode($matches[0]);'),                          $filename);     $filename = preg_replace( $pattern, "", $filename);     upload_file($srcfile, $filename, $dir);     $file = str_replace(G5_DATA_PATH.'/item/', '', $dir.'/'.$filename);     return $file;}  // 파일을 업로드 함function upload_file($srcfile, $destfile, $dir){    if ($destfile == "") return false;    // 업로드 한후 , 퍼미션을 변경함    @move_uploaded_file($srcfile, $dir.'/'.$destfile);    @chmod($dir.'/'.$destfile, G5_FILE_PERMISSION);    return true;}