PHP File Upload

PHP File Upload $ _ FILES ['file'] ['error'] Starting from PHP 4.2.0, PHP will return a corresponding error along with the file information array Code . This code can be found in the error field of the file array generated during file upload, that is, $ _ FILES ['file'] ['error']. The value of upload_err_ OK is 0. If no error occurs, the file is uploaded successfully. The value of upload_err_ini_size is 1. the uploaded file exceeds the limit of the upload_max_filesize option in PHP. ini. The value of upload_err_form_size is 2. The size of the uploaded file exceeds the value specified by the max_file_size option in the HTML form. The value of upload_err_partial is 3, and only part of the file is uploaded. The value of upload_err_no_file is 4, and no file is uploaded. The value of upload_err_no_tmp_dir is 6, and the Temporary Folder cannot be found. PHP 4.3.10 and PHP 5.0.3 are introduced. The value of upload_err_cant_write is 7, and file writing fails. PHP 5.1.0 is introduced. Note: The above value is changed to a PHP constant after PHP 4.3.0.

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PHP /**************************** Upload class by: donnier ****************************/ Class upload_class { Private $ ptname; // The Name Of The upload form; Private $ udname; // whether to create a subdirectory by month (0 indicates no, others are true ); Private $ ufname; // whether to create a file name by time (0 indicates no, others are true ); Private $ ultype; // The type of the uploaded file; Private $ ulsize; // the size of the uploaded file; Private $ ulname; // name of the output file; Private $ ulpath; // output file path; Private $ WM; // Add a watermark (0 is not added, and others are added ); Private $ wmtype; // watermark type (0 indicates text, and others indicates image ); Private $ wmpic; // watermark image; Private $ wmpicquality; // image quality; Private $ wmpictrans; // transparent image; Private $ wmstr; // watermark character; Private $ wmstrsize; // character size; Private $ wmstrfont; // Character Font; Private $ wmstrcolor; // character color; Private $ wmpos; // watermark position (1: top left, 2: Top center, 3: Top right ......); 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 ('upload failed! '); If (! In_array ($ this-> ptname ['type'], $ this-> ultype) $ this-> errorfun ('unsupported file type! '); If ($ this-> ulsize <$ this-> ptname ['SIZE']) $ this-> errorfun ('file is too large! '); 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 ('this file already exists! '); If (! Move_uploaded_file ($ this-> ptname ['tmp _ name'], $ this-> ulname) $ this-> errorfun ('file moving error! '); $ This-> wmfun (); $ This-> errorfun ('upload successful! '); } } 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 ('unsupported background image type! '); } } Else {$ this-> errorfun ('the background image does not exist! ');} 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 ('unsupported watermark image type! '); } } Else {$ this-> errorfun ('the watermark image does not exist! ');} 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 ('the background image is too small! The watermark cannot be generated! '); Switch ($ this-> wmpos ){ Case 0: $ x = rand (0, ($ ow-$ ww); $ Y = rand (0, ($ oh-$ Wh); break; // random Case 1: $ x = 0; $ y = 0; break; // 1 is the top left Case 2: $ x = ($ ow-$ ww)/2; $ y = 0; break; // 2 center the top Case 3: $ x = $ ow-$ WW; $ y = 0; break; // 3: Top right Case 4: $ x = 0; $ Y = ($ oh-$ Wh)/2; break; // 4 is left in the middle Case 5: $ x = ($ ow-$ ww)/2; $ Y = ($ oh-$ Wh)/2; break; // 5 is center Case 6: $ x = $ ow-$ WW; $ Y = ($ oh-$ Wh)/2; break; // 6 is left in the middle Case 7: $ x = 0; $ Y = $ oh-$ Wh; break; // 7 is left at the bottom Case 8: $ x = ($ ow-$ ww)/2; $ Y = $ oh-$ Wh; break; // 8 is centered at the bottom Case 9: $ x = $ ow-$ WW; $ Y = $ oh-$ Wh; break; // 9 is the bottom right Default: $ x = rand (0, ($ ow-$ ww); $ Y = rand (0, ($ oh-$ Wh); break; // random } 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 ('the watermark text color does not exist! ');} Imagestring ($ g, $ this-> wmstrfont, $ X, $ y, $ this-> wmstr, imagecolorallocate ($ g, $ R, $ g, $ B )); break; Case 1; imagecopymerge ($ g, $ W, $ X, $ y, 0, $ WW, $ Wh, $ this-> wmpictrans); break; Default: imagecopymerge ($ g, $ W, $ X, $ y, 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 ('image generation failed! '); } If (isset ($ wmimg) unset ($ wmimg ); If (isset ($ W) imagedestroy ($ W ); Unset ($ groundimg ); Imagedestroy ($ G ); } } Function errorfun ($ e = 'unknown error! '){ $ 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 = "Submit"/> PHP File Require_once ('inc/upload_class.php '); $ Ul = new upload_class (); $ Ul-> uploadfun ();