Php implements a QR code with a custom image in the middle

Php implements a QR code with a custom image in the middle

Class QRCode { Public $ w; Public $ h; Public $ s; Function _ construct ($ w1, $ h1, $ s1 ){ $ This-> w = $ w1; $ This-> h = $ h1; $ This-> s = $ s1; $ This-> outimgase (); } Function qrcode (){ $ Post_data = array (); $ Post_data ['cht'] = 'QR '; $ Post_data ['chs '] = $ this-> w. "x". $ this-> h; $ Post_data ['check'] = $ this-> s; $ Post_data ['choe'] = "UTF-8 "; $ Url = "http://chart.apis.google.com/chart "; $ Data_Array = array (); Foreach ($ post_data as $ key => $ value) { $ Data_Array [] = $ key. '='. $ value; } $ Data = implode ("&", $ data_Array ); $ Ch = curl_init (); Curl_setopt ($ ch, CURLOPT_POST, 1 ); Curl_setopt ($ ch, CURLOPT_HEADER, 0 ); Curl_setopt ($ ch, CURLOPT_URL, $ url ); Curl_setopt ($ ch, CURLOPT_POSTFIELDS, $ data ); Curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, 1 ); $ Result = curl_exec ($ ch ); Curl_close ($ ch ); Return $ result; } Function outimgase (){ Echo $ this-> qrcode (); } } Header ("Content-type: image/png "); $ T = new QRCode (300,300, "tianxin "); 2. then, draw the QR code with your target image through a php file. $ Surl = $ _ POST ["url"]; Function GrabImage ($ url, $ filename = ""){ If ($ url = ""): return false; endif; If ($ filename = ""){ $ Ext = strrchr ($ url ,"."); If ($ ext! = ". Gif" & $ ext! = ". Jpg"): return false; endif; $ Filename = date ("dMYHis"). $ ext; } Ob_start (); Readfile ($ url ); $ Img = ob_get_contents (); Ob_end_clean (); $ Size = strlen ($ img ); $ Fp2 = @ fopen ($ filename, ""); Fwrite ($ fp2, $ img ); Fclose ($ fp2 ); Return $ filename; } $ Source = GrabImage ("http: // localhost/QRCode. php", "Myqrcode.png "); $ Water = GrabImage ($ surl, "t.png "); Function getImageInfo ($ img ){ $ ImageInfo = getimagesize ($ img ); If ($ imageInfo! = False ){ $ ImageType = strtolower (substr (image_type_to_extension ($ imageInfo [2]), 1 )); $ ImageSize = filesize ($ img ); $ Info = array ( "Width" => $ imageInfo [0], "Height" => $ imageInfo [1], "Type" => $ imageType, "Size" => $ imageSize, "Mime" => $ imageInfo ['Mime '] ); Return $ info; } Else { Return false; } } Function thumb ($ image, $ thumbname, $ type = '', $ maxWidth = 200, $ maxHeight = 50, $ interlace = true ){ // Obtain the source image information $ Info = getImageInfo ($ image ); If ($ info! = False ){ $ SrcWidth = $ info ['width']; $ SrcHeight = $ info ['height']; $ Type = empty ($ type )? $ Info ['type']: $ type; $ Type = strtolower ($ type ); $ Interlace = $ interlace? 1: 0; Unset ($ info ); $ Scale = min ($ maxWidth/$ srcWidth, $ maxHeight/$ srcHeight); // calculates the scaling ratio. If ($ scale> = 1 ){ // No longer scale out when the source image size is exceeded $ Width = $ srcWidth; $ Height = $ srcHeight; } Else { // Thumbnail size $ Width = (int) ($ srcWidth * $ scale ); $ Height = (int) ($ srcHeight * $ scale ); } // Load the source image $ CreateFun = 'imagecreatefrom '. ($ type = 'jpg '? 'Jpeg ': $ type ); $ SrcImg = $ createFun ($ image ); // Create a thumbnail If ($ type! = 'GIF' & function_exists ('imagecreatetruecolor ')) $ ThumbImg = imagecreatetruecolor ($ width, $ height ); Else $ ThumbImg = imagecreate ($ width, $ height ); // Copy the image If (function_exists ("ImageCopyResampled ")) Imagecopyresampled ($ thumbImg, $ srcImg, 0, 0, 0, $ width, $ height, $ srcWidth, $ srcHeight ); Else Imagecopyresized ($ thumbImg, $ srcImg, 0, 0, 0, $ width, $ height, $ srcWidth, $ srcHeight ); If ('GIF' = $ type | 'PNG '= $ type ){ // Imagealphablending ($ thumbImg, false); // cancel the default mixed color mode. // Imagesavealpha ($ thumbImg, true); // Set to save the complete alpha channel information $ Background_color = imagecolorallocate ($ thumbImg, 0,255, 0); // assign a Green Imagecolortransparent ($ thumbImg, $ background_color); // Set it to transparent. if this line is commented out, a green image is output. } // Sets the line scan for jpeg images If ('jpg '= $ type | 'jpeg' = $ type) Imageinterlace ($ thumbImg, $ interlace ); // Generate an image $ ImageFun = 'image'. ($ type = 'jpg '? 'Jpeg ': $ type ); $ ImageFun ($ thumbImg, $ thumbname ); Imagedestroy ($ thumbImg ); Imagedestroy ($ srcImg ); Return $ thumbname; } Return false; } Function water ($ source, $ thumb, $ savename = "", $ alpha = 100 ){ // Check whether the file exists If (! File_exists ($ source) |! File_exists ($ thumb )) Return false; // Image information $ SInfo = getImageInfo ($ source ); $ Water = thumb ($ thumb, "wy.jpg", "jpg", $ sInfo ["width"]/4, $ sInfo ["height"]/4 ); $ WInfo = getImageInfo ($ water ); // If the image is smaller than the watermark image, no image is generated. If ($ sInfo ["width"] <$ wInfo ["width"] | $ sInfo ['height'] <$ wInfo ['height']) Return false; // Create an image $ SCreateFun = "imagecreatefrom". $ sInfo ['type']; $ SImage = $ sCreateFun ($ source ); $ WCreateFun = "imagecreatefrom". $ wInfo ['type']; $ WImage = $ wCreateFun ($ water ); // Set the mixed color mode of the image Imagealphablending ($ wImage, true ); // Image position, right-aligned by default // $ PosY = $ sInfo ["height"]-$ wInfo ["height"]; // $ PosX = $ sInfo ["width"]-$ wInfo ["width"]; $ PosY = ($ sInfo ["height"]-$ wInfo ["height"])/2; $ PosX = ($ sInfo ["width"]-$ wInfo ["width"])/2; // Generate a hybrid image Imagecopymerge ($ sImage, $ wImage, $ posX, $ posY, 0, 0, $ wInfo ['width'], $ wInfo ['height'], $ alpha ); // Output image $ ImageFun = 'image'. $ sInfo ['type']; // If no save file name is provided, the original image name is used by default. If (! $ Savename ){ $ Savename = $ source; @ Unlink ($ source ); } // Save the image $ ImageFun ($ sImage, $ savename ); Imagedestroy ($ sImage ); } Water ($ source, $ water ); In the above code, the GrabImage () function is used to convert the file that generates the QR code into an image. the next function is to process the scaling of the image and add the target image to the two places. The code for index.html is as follows: In the middle, you can define the two-dimensional code generator _ bbs.it-home.org In the middle, you can customize the two-dimensional code generator for the image. Content to be generated by the QR code: You want to add your own image address: