PHP檔案上傳

PHP檔案上傳 $_FILES['file']['error']從 PHP 4.2.0 開始，PHP 將隨檔案資訊數組一起返回一個對應的錯誤碼。該代碼可以在檔案上傳時產生的檔案數組中的 error 欄位中被找到，也就是 $_FILES['file']['error']。UPLOAD_ERR_OK其值為 0，沒有錯誤發生，檔案上傳成功。UPLOAD_ERR_INI_SIZE其值為 1，上傳的檔案超過了 php.ini 中 upload_max_filesize 選項限制的值。UPLOAD_ERR_FORM_SIZE其值為 2，上傳檔案的大小超過了 HTML 表單中 MAX_FILE_SIZE 選項指定的值。UPLOAD_ERR_PARTIAL其值為 3，檔案只有部分被上傳。UPLOAD_ERR_NO_FILE其值為 4，沒有檔案被上傳。UPLOAD_ERR_NO_TMP_DIR其值為 6，找不到臨時檔案夾。PHP 4.3.10 和 PHP 5.0.3 引進。UPLOAD_ERR_CANT_WRITE其值為 7，檔案寫入失敗。PHP 5.1.0 引進。注意: 以上值在 PHP 4.3.0 之後變成了 PHP 常量。

<?php /**************************** 上傳類 By:donnier ****************************/ class upload_class{ private $ptname; //上傳表單名稱; private $udname; //是否以月份建立子目錄(0為否,其他為真); private $ufname; //是否以時間建立檔案名稱(0為否,其他為真); private $ultype; //上傳檔案類型; private $ulsize; //上傳檔案大小; private $ulname; //輸出檔案名稱; private $ulpath; //輸出檔案路徑; private $wm;     //浮水印附加(0為不加,其他為加); private $wmtype; //浮水印類型(0為文字,其他為圖片); private $wmpic;     //浮水印圖片; private $wmpicquality; //圖片品質; private $wmpictrans; //圖片透明; private $wmstr;     //浮水印字元; private $wmstrsize; //字元大小; private $wmstrfont; //字元字型; private $wmstrcolor; //字元顏色; private $wmpos;     //浮水印位置(1為頂端居左,2為頂端置中,3為頂端居右……); function __construct($ptname='upfile',$udname=1,$ufname=1,$ultype=array('image/jpg','image/jpeg','image/png','image/pjpeg','image/gif','image/bmp','image/x-png'),$wm=1,$wmtype=1,$wmpic='images/wm.gif',$ulsize=2097152,$ulpath='images/temp/',$wmpictrans=20,$wmpicquality=80,$wmstr='DONLINE',$wmstrsize=5,$wmstrfont='./font/cour.ttf',$wmstrcolor='#ff0000',$wmpos=9){    $this->ptname=$_FILES[$ptname];    $this->udname=$udname;    $this->ufname=$ufname;    $this->ultype=$ultype;    $this->ulsize=$ulsize;    $this->ulpath=$ulpath;    $this->wm=$wm;    $this->wmtype=$wmtype;    $this->wmpic=$wmpic;    $this->wmpicquality=$wmpicquality;    $this->wmpictrans=$wmpictrans;    $this->wmstr=$wmstr;    $this->wmstrsize=$wmstrsize;    $this->wmstrfont=$wmstrfont;    $this->wmstrcolor=$wmstrcolor;    $this->wmpos=$wmpos; } function uploadfun(){    if($_SERVER['REQUEST_METHOD']=='POST'){ if(!is_uploaded_file($this->ptname['tmp_name']))$this->errorfun('上傳失敗！'); if(!in_array($this->ptname['type'],$this->ultype))$this->errorfun('不支援的檔案類型！'); if($this->ulsize<$this->ptname['size'])$this->errorfun('檔案太大！'); if($this->udname){date_default_timezone_set('UTC');$this->ulpath=$this->ulpath.'month_'.date('Ym').'/';} else{$this->ulpath=$this->ulpath;} $this->createfun($this->ulpath); if($this->ufname){$t=pathinfo($this->ptname['name']);$this->ulname=$this->ulpath.time().'.'.$t['extension'];} else{$this->ulname=$this->ulpath.$this->ptname['name'];} if(file_exists($this->ulname))$this->errorfun('該檔案已存在！'); if(!move_uploaded_file($this->ptname['tmp_name'],$this->ulname))$this->errorfun('移動檔案錯誤！'); $this->wmfun(); $this->errorfun('上傳成功！');    } } function createfun($d){    if(!file_exists($d)){$this->createfun(dirname($d));mkdir($d);} } function wmfun(){    if($this->wm){ if(file_exists($this->ulname)){ $groundimg=getimagesize($this->ulname); $ow=$groundimg[0]; $oh=$groundimg[1]; switch($groundimg[2]){     case 1:$g=imagecreatefromgif($this->ulname);break;     case 2:$g=imagecreatefromjpeg($this->ulname);break;     case 3:$g=imagecreatefrompng($this->ulname);break;     case 4:$g=imagecreatefromwbmp($this->ulname);break;     default:$this->errorfun('不支援的背景圖片類型！'); } } else{$this->errorfun('背景圖片不存在！');} if(file_exists($this->wmpic)){ $wmimg=getimagesize($this->wmpic); $ww=$wmimg[0]; $wh=$wmimg[1]; switch($wmimg[2]){     case 1:$w=imagecreatefromgif($this->wmpic);break;     case 2:$w=imagecreatefromjpeg($this->wmpic);break;     case 3:$w=imagecreatefrompng($this->wmpic);break;     case 4:$w=imagecreatefromwbmp($this->wmpic);break;     default:$this->errorfun('不支援的浮水印圖片類型！'); } } else{$this->errorfun('浮水印圖片不存在！');} switch($this->wmtype){ case 0:$tp=imagettfbbox(ceil($this->wmstrsize*2.5),0,$this->wmstrfont,$this->wmstr);$ww=$tp[2]-$tp[6];$wh=$tp[3]-$tp[7];unset($tp);break; case 1:$ww=$ww;$wh=$wh;break; default:$ww=$ww;$wh=$wh;break; } if($ow<$ww || $oh<$wh)$this->errorfun('背景圖片太小！無法產生浮水印！'); switch($this->wmpos){   case 0:$x=rand(0,($ow-$ww));$y=rand(0,($oh-$wh));break;//隨機        case 1:$x=0;$y=0;break;//1為頂端居左           case 2:$x=($ow-$ww)/2;$y=0;break;//2為頂端置中           case 3:$x=$ow-$ww;$y=0;break;//3為頂端居右           case 4:$x=0;$y=($oh-$wh)/2;break;//4為中部居左           case 5:$x=($ow-$ww)/2;$y=($oh-$wh)/2;break;//5為中部置中        case 6:$x=$ow-$ww;$y=($oh-$wh)/2;break;//6為中部居右           case 7:$x=0;$y=$oh-$wh;break;//7為底端居左         case 8:$x=($ow-$ww)/2;$y=$oh-$wh;break;//8為底端置中           case 9:$x=$ow-$ww;$y=$oh-$wh;break;//9為底端居右           default:$x=rand(0,($ow-$ww));$y=rand(0,($oh-$wh));break;//隨機           } imagealphablending($g, true); switch($this->wmtype){ case 0: if($this->wmstrcolor){$R=hexdec(substr($this->wmstrcolor,1,2));$G=hexdec(substr($this->wmstrcolor,3,2));$B=hexdec(substr($this->wmstrcolor,5));} else{$this->errorfun('浮水印文字顏色不存在！');} imagestring($g,$this->wmstrfont,$x,$y,$this->wmstr,imagecolorallocate($g,$R,$G,$B));break; case 1;imagecopymerge($g,$w,$x,$y,0,0,$ww,$wh,$this->wmpictrans);break; default:imagecopymerge($g,$w,$x,$y,0,0,$ww,$wh,$this->wmpictrans);break; } @unlink($this->ulname); switch($groundimg[2]){        case 1:imagegif($g,$this->ulname);break;        case 2:imagejpeg($g,$this->ulname,$this->wmpicquality);break;        case 3:imagepng($g,$this->ulname);break;  case 4:imagewbmp($g,$this->ulname);break;       default:$this->errorfun('產生圖片失敗！'); }  if(isset($wmimg))unset($wmimg);     if(isset($w))imagedestroy($w);     unset($groundimg);     imagedestroy($g);     } } function errorfun($e='未知錯誤！'){    $msg='<script language="javascript" type="text/javascript">';    $msg.='alert("'.$e.'");';    $msg.='history.back();';    $msg.='</script>';    echo $msg;    exit; } } ?> <form enctype="multipart/form-data" method="post" action="upfile.php"> <input name="upfile" type="file" /> <input type="submit" name="Submit" value="提交" /> php檔案 require_once('inc/upload_class.php'); $ul=new upload_class(); $ul->uploadfun();