Php image upload and watermarking (adding watermarks automatically) _ PHP Tutorial

Add watermarks to php image uploads (add watermarks automatically ). Php image upload and watermarking (automatic watermark adding) * This is a perfect php file upload code. after the image is uploaded successfully, it is automatically added to the image, this greatly improves the php image upload and watermarking (automatically adding watermarks)/* This is a perfect php file upload code. after the image is uploaded successfully, it is automatically added to the image, this greatly improves the watermark effect.

Php Tutorial: adding watermarks to image uploads (adding watermarks automatically)
/*
This is a perfect php file upload code. after the image is uploaded successfully, the image is automatically added with a watermark. This greatly improves the watermark effect by hand.
*/

Function upload ($ uploadfile, $ watermark = 1, $ watertype = 1, $ content ){
Foreach ($ uploadfile ['name'] as $ key => $ name) {// multifile Upload function
Uploadall ($ uploadfile, $ key, $ watermark, $ watertype, $ content );
}
}
Function uploadall ($ uploadfile, $ I, $ watermark, $ watertype, $ content ){
$ Watermark = $ watermark; // whether to add a watermark. (1 indicates adding a watermark, and others indicates not adding a watermark );
$ Watertype = $ watertype; // watermark type (1 is text, 2 is image)
$ Watercontent = $ content; // watermark content
If (empty ($ uploadfile ['name'] [$ I]) {
Die ("uploading files not selected ");
}
If ($ uploadfile ['error'] [$ I] = 2) {// verify the html judgment result
Die ("the uploaded file is too large ");
}
$ Allow_filemaxsize = 2048000; // 2 m
$ Filesize = $ uploadfile ['size'] [$ I];
If ($ filesize> $ allow_filemaxsize ){
Die ("the uploaded file is too large ");
}
$ Allow_filetypes = array ("jpeg", "gif", "png", "jpg", "pjpeg"); // The Uniform resource type of files that can be uploaded. mimetype
$ Allow = false; // not allowed by default
$ Mimetype = $ uploadfile ['type'] [$ I]; // mime file type of the uploaded file
Foreach ($ allow_filetypes as $ t ){
If (strpos ($ mimetype, $ t )! = False ){
$ Allow = true; // the file type that meets the upload conditions is found.
Break;
}
}
If ($ allow = false ){
Die ("the uploaded file type is not allowed ");
}
$ Result = is_uploaded_file ($ uploadfile ['tmp _ name'] [$ I]); // You can check whether the file is generated by the upload action.
If (! $ Result ){
Die ("the uploaded file is incorrect ");
}
$ Uploaddir = "img/"; // upload the file storage directory
If (! File_exists ($ uploaddir) mkdir ($ uploaddir, 0777, true); // recursively create
/** Rename the file **/
$ Filetype = explode (".", $ uploadfile ['name'] [$ I]);
$ Filetype = array_pop ($ filetype );
$ Uploadfilename = time (). ".". $ filetype;
$ _ Session ['filename'] = $ uploadfilename;
// End
$ Result = move_uploaded_file ($ uploadfile ['tmp _ name'] [$ I], $ uploaddir. $ uploadfilename );
If ($ result ){
Echo "file uploaded successfully ";
} Else {
Switch ($ uploadfile ['error'] [$ I]) {
Case 1: return "the uploaded file exceeds the maximum value set in php. ini"; break;
Case 2: return "the uploaded file exceeds the maximum value set in html"; break;
Case 3: return "only part of the file is uploaded"; break;
Case 4; return "no file is uploaded"; break;
Default: die ("file Upload failed ");
}
}
If ($ watermark = 1 ){
$ Iinfo = getimagesize ($ uploaddir. $ uploadfilename); // Obtain the image information and obtain the array.
$ Nimage = imagecreatetruecolor ($ iinfo [0], $ iinfo [1]);
$ White = imagecolorallocate ($ nimage, 255,255,255); // set the background color to white.
$ Black = imagecolorallocate ($ nimage, 0); // set the background color to black.
$ Red = imagecolorallocate ($ nimage, 255, 0, 0); // set the background color to red.
Imagefill ($ nimage, $ white); // The background is white.
Switch ($ iinfo [2]) {
Case 1:
$ Simage = imagecreatefromgif ($ uploaddir. $ uploadfilename );
Break;
Case 2:
$ Simage = imagecreatefromjpeg ($ uploaddir. $ uploadfilename );
Break;
Case 3:
$ Simage = imagecreatefrompng ($ uploaddir. $ uploadfilename );
Break;
Case 6:
$ Simage = imagecreatefromwbmp ($ uploaddir. $ uploadfilename );
Break;
Default:
Die ("unsupported file types ");
Exit;
}
Imagecopy ($ nimage, $ simage, 0, 0, 0, $ iinfo ['0'], $ iinfo ['1']);
Switch ($ watertype ){
Case 1: // add a watermark string
Imagestring ($ nimage, 5, $ iinfo ['0']/2-50, $ iinfo ['1']-30, $ watercontent, $ black );
Break;
Case 2: // add a watermark image
$ Simage1 = imagecreatefromgif ($ watercontent );
$ Size = getimagesize ($ watercontent );
Imagecopy ($ nimage, $ simage1, $ iinfo ['0']/2 + 50, $ iinfo ['1']-100,0, 0, $ size [0], $ size [1]);
Imagedestroy ($ simage1 );
Break;
}

Switch ($ iinfo [2]) {
Case 1:
Imagejpeg ($ nimage, $ uploaddir. $ uploadfilename); // Create a jpeg file with $ destination file name for the image $ nimage
Break;
Case 2:
Imagejpeg ($ nimage, $ uploaddir. $ uploadfilename );
Break;
Case 3:
Imagepng ($ nimage, $ uploaddir. $ uploadfilename );
Break;
Case 6:
Imagewbmp ($ nimage, $ uploaddir. $ uploadfilename );
Break;
}
Imagedestroy ($ nimage); // overwrite the original uploaded File
Imagedestroy ($ simage );
}
}
If (@ $ _ get ['act '] = "insert") {// parameter verification is not performed
// The four parameters of this function are: the name value of the upload control; whether to add a watermark (1 is added, and other numbers are not good );
// Watermark type (1 is a string, 2 is an image); watermark content, data written when a string, and image address;
$ Picture = upload ($ _ files ['picture '], "img/watermark.gif"); // upload the file and return the path name of the uploaded file

}

?>

Upload code

Http://www.bkjia.com/PHPjc/444863.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/444863.htmlTechArticlephp image Upload watermark (automatically add watermark)/* This is a perfect php file upload code, the image uploaded successfully and automatically added to the image watermark, this is a good and fast improvement...