1. 업로드 부분
<SCRIPT LANGUAGE="JavaScript">
<!--
// 다중 업로드
var total_image = 1;
function add_upload(){
        if(total_image < 20){
                var objTbl = document.all["upload_file_table"];
                var objRow = objTbl.insertRow();
                var objCell = objRow.insertCell();
                objCell.innerHTML += "<input type='file' name='upload_file["+total_image+"]' size='25'  onMouseover=\"image_preview(this);\"><br>";
        }
        total_image++;
}

// 이미지 미리 보기
var preview = new Image();
function image_preview(obj){
        var now_image = false;
        var temp;
        preview.src = obj.value;
        // 지정된 폭, 높이
        var imageWidth = 200;
        var imageHeight = 150;
        // 이미지 일 경우 미리 보기
        if(obj.value.match(/(.jpg|.jpeg|.gif|.png)/)){
                preview_image.src = obj.value;
                // 이미지 비율
                var Yrate = preview.width/preview.height;
                var Xrate = preview.height/preview.width;
                if(preview.width > imageWidth||preview.height > imageHeight){
                        // 폭이 지정된 폭보다 클 경우                
                        if(preview.width > imageWidth){
                                preview_image.width = imageWidth;
                                preview_image.height = imageWidth * Xrate;
                        }
                        // 높이가 지정된 높이보다 클 경우
                        if(preview.height > imageHeight){
                                preview_image.height = imageHeight;
                                preview_image.width = imageHeight * Yrate;
                        }
                }
        }
        // 전체 이미지가 없을 경우 이미지 없음으로
        for(var i=0; total_image>i; i++){
                temp = document.all.upload_test["upload_file["+i+"]"].value;
                if(temp.match(/(.jpg|.jpeg|.gif|.png)/)){
                        now_image = true;
                }
        }
        if(!now_image){
                preview_image.src = "image_preview.gif";
                preview_image.width = 120;
                preview_image.height = 90;
        }
}
//-->
</script>
<form name="upload_test" action="test_ok.php" method="post" enctype="multipart/form-data">
<a href="#none" onClick="add_upload();">add upload</a>
<!-- 첨부파일 테이블 //-->
<table id="upload_file_table">
        <tr>
        <td>
                <input type='file' name='upload_file[0]' size='25' onMouseover="image_preview(this);" value="test"><br>
        </td>
        </tr>
</table>        

<input type="submit" value="전송">
</form>
이미지 미리 보기
<img src="image_preview.gif" name="preview_image" width="120" height="90">


2. 저장 부분
<?
function upload_save($save_dir){
        global $setup,$HTTP_POST_FILES;
        // 변수 설정
        $thetime = time();
        if(!$setup[use_pds]) return false;
        // 중복 체크
        for($i=0; sizeof($HTTP_POST_FILES[upload_file][name])>$i; $i++){
                if($HTTP_POST_FILES[upload_file][name][$i]){
                        $file_names[$i] = $HTTP_POST_FILES[upload_file][name][$i];
                }
        }
        if($file_names) if(sizeof($file_names)!=sizeof(array_unique($file_names))) error("중복된 파일이 있습니다.");
        // 업로드
        for($i=0; sizeof($HTTP_POST_FILES[upload_file])>$i; $i++){
                $file = $HTTP_POST_FILES[upload_file][tmp_name][$i];
                $file_name = $HTTP_POST_FILES[upload_file][name][$i];
                $file_size = $HTTP_POST_FILES[upload_file][size][$i];
                $file_type = $HTTP_POST_FILES[upload_file][type][$i];
                // 크기 체크
                if($file_size>$setup[max_upload]) error("3Mbyte 이상 업로드 하실 수 없습니다.");
                if($file_size>0){
                        $s_file_name = $file_name;
                        // 체크
                        if(!is_uploaded_file($file)) error("업로드한 파일이 존재 하지 않습니다.");
                        // 확장자 체크
                        $no_names = array("php","html","inc","phtm","htm","shtm","ztx","dot","asp","cgi","pl");
                        $_file_name = explode(".",$file_name);
                        for($i2=0; sizeof($_file_name)>$i2; $i2++){
                                if(in_array(strtolower($_file_name[$i2]),$no_names)) error("HTML, CGI 관련 언어는 올리실 수 없습니다.");
                        }
                        $file = eregi_replace("\\\\","\\",$file);
                        $file_name = str_replace(" ","_",$s_file_name);
                        $s_file_name = str_replace("-","_",$s_file_name);

                        // 디렉토리를 검사함
                        if(!is_dir($save_dir)) {
                                @mkdir($save_dir,0777);
                                @chmod($save_dir,0706);
                        }
                        // 파일 저장
                        if(!file_exists($save_dir.$s_file_name)){
                                if(!move_uploaded_file($file,$save_dir.$s_file_name)) Error("파일업로드가 제대로 되지 않았습니다");
                                $file_name="data/$id/".$s_file_name;  
                                @chmod($file_name,0706);
                                
                        }else{        // 증복 파일이 있을때
                                @mkdir($save_dir.$thetime,0777);
                                if(!move_uploaded_file($file,$save_dir.$thetime."/".$s_file_name))  Error("파일업로드가 제대로 되지 않았습니다");
                                $file_name = $save_dir.$thetime."/".$s_file_name;
                                @chmod($file_name,0706);
                                @chmod($save_dir.$thetime,0707);
                        }
                        // 쿼리문 저장
                }
        }
}

// 에러 함수
function error($message){
        echo "$message";
        exit;
}

// 셋업
$setup[use_pds] = 1; // 자료실 기능 사용
$setup[max_upload] = 1024 * 1024 * 3; // 업로드 용량 제한
$id = "talkbox";
$save_dir = "data/".$id."/";        // 저장 폴더
upload_save($save_dir);
?>

<? mysql_query("INSERT INTO $download_table"."_$id (parent,file_name,s_file_name)values('$no','$file_name','$s_file_name')")or error(mysql_error()); ?>

 

출처 : php스쿨