Php adds watermarks to images .? Php *** Image watermarking (applicable to the pngjpggif format) ** @ authorflynetcn ** @ param $ srcImg original image * @ param $ waterImg watermark image * @ param $ savepath save path * @ para /**
* Watermarks images (for png, jpg, and gif formats)
*
* @ Author flynetcn
*
* @ Param $ srcImg original image
* @ Param $ waterImg watermark image
* @ Param $ savepath: save path
* @ Param $ savename save the name
* @ Param $ position of the positon watermark
* 1: Top left, 2: top right, 3: center, 4: bottom left, 5: bottom right
* @ Param $ alpha transparency -- 0: completely transparent, 100: completely opaque
*
* @ Return success -- the new image address after the watermark is added
* Failed ---1: The original file does not exist.-2: The watermark image does not exist.-3: The original file Image object creation failed.
*-4: failed to create the watermark File Image object-5: failed to save the new image after adding the watermark
*/
Function img_water_mark ($ srcImg, $ waterImg, $ savepath = null, $ savename = null, $ positon = 5, $ alpha = 30)
{
$ Temp = pathinfo ($ srcImg );
$ Name = $ temp [basename];
$ Path = $ temp [dirname];
$ Exte = $ temp [extension];
$ Savename = $ savename? $ Savename: $ name;
$ Savepath = $ savepath? $ Savepath: $ path;
$ Savefile = $ savepath./. $ savename;
$ Srcinfo = @ getimagesize ($ srcImg );
If (! $ Srcinfo ){
Return-1; // The original file does not exist.
}
$ Waterinfo = @ getimagesize ($ waterImg );
If (! $ Waterinfo ){
Return-2; // The watermark image does not exist.
}
$ SrcImgObj = image_create_from_ext ($ srcImg );
If (! $ SrcImgObj ){
Return-3; // failed to create the original file Image object
}
$ WaterImgObj = image_create_from_ext ($ waterImg );
If (! $ WaterImgObj ){
Return-4; // watermark File Image object creation failed
}
Switch ($ positon ){
// 1 top left
Case 1: $ x = $ y = 0; break;
// 2. top right
Case 2: $ x = $ srcinfo [0]-$ waterinfo [0]; $ y = 0; break;
// 3 center
Case 3: $ x = ($ srcinfo [0]-$ waterinfo [0])/2; $ y = ($ srcinfo [1]-$ waterinfo [1]) /2; break;
// 4 the bottom is left
Case 4: $ x = 0; $ y = $ srcinfo [1]-$ waterinfo [1]; break;
// 5 bottom right
Case 5: $ x = $ srcinfo [0]-$ waterinfo [0]; $ y = $ srcinfo [1]-$ waterinfo [1]; break;
Default: $ x = $ y = 0;
}
Imagecopymerge ($ srcImgObj, $ waterImgObj, $ x, $ y, 0, 0, $ waterinfo [0], $ waterinfo [1], $ alpha );
Switch ($ srcinfo [2]) {
Case 1: imagegif ($ srcImgObj, $ savefile); break;
Case 2: imagejpeg ($ srcImgObj, $ savefile); break;
Case 3: imagepng ($ srcImgObj, $ savefile); break;
Default: return-5; // save failed
}
Imagedestroy ($ srcImgObj );
Imagedestroy ($ waterImgObj );
Return $ savefile;
}
Function image_create_from_ext ($ imgfile)
{
$ Info = getimagesize ($ imgfile );
$ Im = null;
Switch ($ info [2]) {
Case 1: $ im = imagecreatefromgif ($ imgfile); break;
Case 2: $ im = imagecreatefromjpeg ($ imgfile); break;
Case 3: $ im = imagecreatefrompng ($ imgfile); break;
}
Return $ im;
}
Http://www.bkjia.com/PHPjc/486057.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/486057.htmlTechArticle? Php/*** watermarks images (for png/jpg/gif formats) ** @ author flynetcn ** @ param $ srcImg original image * @ param $ waterImg watermark image * @ param $ savepath save path * @ para...
