上传图片之后，在数据库中可以看到完整路径，但在本地文件夹中看不到该图片。

upload.php文件内容③：
$saveto = linkurl($do->saveto);
if($DT['ftp_remote'] && $DT['remote_url']) {
require DT_ROOT.'/include/ftp.class.php';
$ftp = new dftp($DT['ftp_host'], $DT['ftp_user'], $DT['ftp_pass'], $DT['ftp_port'], $DT['ftp_path'], $DT['ftp_pasv'], $DT['ftp_ssl']);
if($ftp->connected) {
$exp = explode("file/upload/", $saveto);
$remote = $exp[1];
if($ftp->dftp_put($do->saveto, $remote)) {
$saveto = $DT['remote_url'].$remote;
$DT['ftp_save'] or file_del(DT_ROOT.'/'.$do->saveto);
if(strpos($do->saveto, '.thumb.') !== false) {
$local = str_replace('.thumb.'.$do->ext, '', $do->saveto);
$remote = str_replace('.thumb.'.$do->ext, '', $exp[1]);
$ftp->dftp_put($local, $remote);
$DT['ftp_save'] or file_del(DT_ROOT.'/'.$local);
$local = str_replace('.thumb.'.$do->ext, '.middle.'.$do->ext, $do->saveto);
$remote = str_replace('.thumb.'.$do->ext, '.middle.'.$do->ext, $exp[1]);
$ftp->dftp_put($local, $remote);
$DT['ftp_save'] or file_del(DT_ROOT.'/'.$local);
}
}
}
}
$fid = isset($fid) ? $fid : '';
if(isset($old) && $old && in_array($from, array('thumb', 'photo'))) delete_upload($old, $_userid);
$_saveto = $swfupload ? str_replace('.thumb.'.$do->ext, '', $saveto) : $saveto;
$_SESSION['uploads'][] = $_saveto;
if($DT['uploadlog']) $db->query("INSERT INTO {$upload_table} (item,fileurl,filesize,fileext,upfrom,width,height,moduleid,username,ip,addtime,itemid) VALUES ('".md5($saveto)."','$saveto','$do->file_size','$do->ext','$from','$img_w','$img_h','$moduleid','$_username','$DT_IP','$do->uptime','$itemid')");
if($MG['uploadcredit'] > 0) {
require DT_ROOT.'/include/module.func.php';
credit_add($_username, -$MG['uploadcredit']);
credit_record($_username, -$MG['uploadcredit'], 'system', $L['upload'], $from);
}
if($swfupload) exit('FILEID:'.$saveto);
$pr = 'parent.document.getElementById';
if($from == 'thumb') {
$js .= 'try{'.$pr.'("d'.$fid.'").src="'.$saveto.'";}catch(e){}';
$js .= $pr.'("'.$fid.'").value="'.$saveto.'";';
$js .= 'window.parent.cDialog();';
} else if($from == 'album' || $from == 'photo') {
$js .= 'window.parent.getAlbum("'.$saveto.'", "'.$fid.'");';
$js .= $from == 'photo' ? $pr.'("dform").submit();' : 'window.parent.cDialog();';
} else if($from == 'editor') {
if($action == 'kindeditor') exit('{"error":0,"url":"'.str_replace('/', '\/', $saveto).'"}');
$js .= 'window.parent.SetUrl("'.$saveto.'");';
$js .= 'window.parent.GetE("frmUpload").reset();';
} else if($from == 'attach') {
$js .= 'window.parent.GetE("txtUrl").value="'.$saveto.'";';
$js .= 'window.parent.window.parent.Ok();';
} else if($from == 'file') {
if($moduleid == 2 && $fid == 'chat') {
$js .= $pr.'("word").value="'.$saveto.'";';
$js .= 'window.parent.chat_send();';
} else {
$js .= $pr.'("'.$fid.'").value="'.$saveto.'";';
if($module == 'down') $js .= 'window.parent.initd('.dround($do->file_size/1024/1024, 2).');';
}
$js .= 'window.parent.cDialog();';
}
dalert('', '', $js);
} else {
$errmsg = 'Error(10)'.$do->errmsg;
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'UTF-8'));
if($action == 'kindeditor') exit('{"error":1,"message":"'.$errmsg.'"}');
dalert($errmsg, '', $errjs);
}
?>

upload.php文件内容②：
require DT_ROOT.'/include/post.func.php';
$uploaddir = 'file/upload/'.timetodate($DT_TIME, $DT['uploaddir']).'/';
is_dir(DT_ROOT.'/'.$uploaddir) or dir_create(DT_ROOT.'/'.$uploaddir);
if($MG['uploadtype']) $DT['uploadtype'] = $MG['uploadtype'];
if($MG['uploadsize']) $DT['uploadsize'] = $MG['uploadsize'];
if($remote && strlen($remote) > 17 && strpos($remote, '://') !== false) {
require DT_ROOT.'/include/remote.class.php';
$do = new remote($remote, $uploaddir);
} else {
require DT_ROOT.'/include/upload.class.php';
$do = new upload($_FILES, $uploaddir);
}
$js = $errjs = '';
if($from == 'thumb' || $from == 'album' || $from == 'photo' || $from == 'file') {
$errjs .= 'window.parent.cDialog();';
} else if($from == 'editor' || $from == 'attach') {
$errjs .= 'window.parent.GetE("frmUpload").reset();';
}
if($do->save()) {
$session = new dsession();
$limit = intval($MG['uploadlimit']);
$total = isset($_SESSION['uploads']) ? count($_SESSION['uploads']) : 0;
if($limit && $total > $limit - 1) {
file_del(DT_ROOT.'/'.$do->saveto);
$errmsg = 'Error(6)'.lang('message->upload_limit', array($limit));
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'utf-8'));
dalert($errmsg, '', $errjs);
}
$img_info = @getimagesize(DT_ROOT.'/'.$do->saveto);
if(in_array($do->ext, array('jpg', 'jpeg', 'gif', 'png', 'bmp', 'swf'))) {
$upload_bad =0;
if($img_info) {
$upload_mime = array('jpg' => 'image/jpeg', 'jpeg' => 'image/jpeg', 'gif' => 'image/gif', 'png' => 'image/png', 'bmp' => 'image/bmp', 'swf' => 'application/x-shockwave-flash');
if($img_info['mime'] != $upload_mime[$do->ext]) $upload_bad = 1;
} else {
$upload_bad = 1;
}
if($upload_bad) {
file_del(DT_ROOT.'/'.$do->saveto);
$errmsg = 'Error(7)'.lang('message->upload_bad');
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'utf-8'));
dalert($errmsg, '', $errjs);
}
}
if(in_array($do->ext, array('jpg', 'jpeg')) && $img_info['channels'] == 4) {
file_del(DT_ROOT.'/'.$do->saveto);
$errmsg = 'Error(8)'.lang('message->upload_cmyk');
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'utf-8'));
dalert($errmsg, '', $errjs);
}
$img_w = $img_h = 0;
if($do->image) {
require DT_ROOT.'/include/image.class.php';
if($do->ext == 'gif' && in_array($from, array('thumb', 'album', 'photo'))) {
if(!function_exists('imagegif') || !function_exists('imagecreatefromgif')) {
file_del(DT_ROOT.'/'.$do->saveto);
$errmsg = 'Error(9)'.lang('message->upload_jpg');
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'utf-8'));
dalert($errmsg, '', $errjs);
}
}
if($DT['gif_ani'] && $do->ext == 'gif') {
if(strpos(file_get(DT_ROOT.'/'.$do->saveto), chr(0x21).chr(0xff).chr(0x0b).'NETSCAPE2.0') !== false) {
$DT['max_image'] = $DT['water_type'] = $width = $height = 0;
}
}
if($DT['bmp_jpg'] && $do->ext == 'bmp') {
require DT_ROOT.'/include/bmp.func.php';
$bmp_src = DT_ROOT.'/'.$do->saveto;
$bmp = imagecreatefrombmp($bmp_src);
if($bmp) {
$do->saveto = str_replace('.bmp', '.jpg', $do->saveto);
$do->ext = 'jpg';
imagejpeg($bmp, DT_ROOT.'/'.$do->saveto);
file_del($bmp_src);
if(DT_CHMOD) @chmod(DT_ROOT.'/'.$do->saveto, DT_CHMOD);
}
}
$img_w = $img_info[0];
$img_h = $img_info[1];
if($DT['max_image'] && in_array($from, array('editor', 'album', 'photo'))) {
if($img_w > $DT['max_image']) {
$img_h = intval($DT['max_image']*$img_h/$img_w);
$img_w = $DT['max_image'];
$image = new image(DT_ROOT.'/'.$do->saveto);
$image->thumb($img_w, $img_h);
}
}
if($from == 'thumb') {
if($width && $height) {
$image = new image(DT_ROOT.'/'.$do->saveto);
$image->thumb($width, $height, $DT['thumb_title']);
$img_w = $width;
$img_h = $height;
$do->file_size = filesize(DT_ROOT.'/'.$do->saveto);
}
} else if($from == 'album' || $from == 'photo') {
$saveto = $do->saveto;
$do->saveto = $do->saveto.'.thumb.'.$do->ext;
file_copy(DT_ROOT.'/'.$saveto, DT_ROOT.'/'.$do->saveto);
$middle = $saveto.'.middle.'.$do->ext;
file_copy(DT_ROOT.'/'.$saveto, DT_ROOT.'/'.$middle);
if($DT['water_type'] == 2) {
$image = new image(DT_ROOT.'/'.$saveto);
$image->waterimage();
} else if($DT['water_type'] == 1) {
$image = new image(DT_ROOT.'/'.$saveto);
$image->watertext();
}
if($DT['water_type'] && $DT['water_com'] && $_groupid > 5) {
$image = new image(DT_ROOT.'/'.$saveto);
$image->text = $_company;
$image->pos = 5;
$image->watertext();
}
if($from == 'photo') $DT['thumb_album'] = 0;
$image = new image(DT_ROOT.'/'.$do->saveto);
$image->thumb($width, $height, $DT['thumb_album']);
$image = new image(DT_ROOT.'/'.$middle);
$image->thumb($DT['middle_w'], $DT['middle_h'], $DT['thumb_album']);
if($DT['water_middle'] && $DT['water_type']) {
if($DT['water_type'] == 2) {
$image = new image(DT_ROOT.'/'.$middle);
$image->waterimage();
} else if($DT['water_type'] == 1) {
$image = new image(DT_ROOT.'/'.$middle);
$image->watertext();
}
}
} else if($from == 'editor') {
if($_groupid == 1 && DT_EDITOR == 'fckeditor' && !isset($watermark)) $DT['water_type'] = 0;
if($DT['water_type']) {
$image = new image(DT_ROOT.'/'.$do->saveto);
if($DT['water_type'] == 2) {
$image->waterimage();
} else if($DT['water_type'] == 1) {
$image->watertext();
}
}
}
}

upload.php文件内容①：
<?php
require 'common.inc.php';
@set_time_limit(0);
if($DT_BOT) dhttp(403);
$from = isset($from) ? trim($from) : '';
$width = isset($width) ? intval($width) : 0;
$height = isset($height) ? intval($height) : 0;
$swfupload = isset($swfupload) ? 1 : 0;
$errmsg = '';
if($swfupload) {//Fix FlashPlayer Bug
$swf_userid = intval($swf_userid);
if($swf_userid != $_userid && is_md5($swf_auth)) {
$swf_groupid = intval($swf_groupid);
if($swf_auth == md5($swf_userid.$swf_username.$swf_groupid.$swf_company.DT_KEY.$DT_IP) || $swf_auth == md5($swf_userid.$swf_username.$swf_groupid.convert($swf_company, 'utf-8', DT_CHARSET).DT_KEY.$DT_IP)) {
$_userid = $swf_userid;
$_username = $swf_username;
$_groupid = $swf_groupid;
$_company = convert($swf_company, 'utf-8', DT_CHARSET);
$MG = cache_read('group-'.$_groupid.'.php');
} else {
$errmsg = 'Error(0)'.'SWFUpload Denied';
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'utf-8'));
dalert($errmsg);
}
}
}
$upload_table = $DT_PRE.'upload_'.($_userid%10);
if(!in_array($from, array('thumb', 'album', 'photo', 'editor', 'attach', 'file'))) {
$errmsg = 'Error(1)'.'Access Denied';
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'utf-8'));
dalert($errmsg);
}
if(!$MG['upload']) {
$errmsg = 'Error(2)'.lang('message->upload_refuse');
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'utf-8'));
dalert($errmsg);
}
if($MG['uploadcredit'] > 0 && $_credit < $MG['uploadcredit']) {
$errmsg = 'Error(3)'.lang('message->upload_credit', array($MG['uploadcredit'], $_credit));
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'utf-8'));
dalert($errmsg);
}
$remote = isset($remote) ? trim($remote) : '';
if(!$_FILES && !$remote) {
$errmsg = 'Error(4)'.lang('message->upload_fail');
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'utf-8'));
dalert($errmsg);
}
if($DT['uploadlog'] && $MG['uploadday']) {
$condition = 'addtime>'.($DT_TIME - 86400);
$condition .= $_username ? " AND username='$_username'" : " AND ip='$DT_IP'";
$r = $db->get_one("SELECT COUNT(*) AS num FROM {$upload_table} WHERE $condition");
if($r['num'] >= $MG['uploadday']) {
$errmsg = 'Error(5)'.lang('message->upload_limit_day', array($MG['uploadday'], $r['num']));
if($swfupload) exit(convert($errmsg, DT_CHARSET, 'utf-8'));
dalert($errmsg);
}
}

请教大神：php图片上传问题