ThinkPHP3.2.3 QR code for expansion-php Tutorial

The QR code of ThinkPHP3.2.3 extension is first installed in the path. Simple use without logo: publicfunctionqrcode () {Vendor (phpqrcode. phpqrcode); generate a QR code image $ objectnewQRcode (); $ urlwww. sh ThinkPHP3.2.3 extended QR code

Set the security path first.

Simple use without logo:

Public function qrcode () {Vendor ('phpqrcode. phpqrcode '); // Generate a QR code image $ object = new \ QRcode (); $ url = 'http: // www. shouce. ren/'; // URL or text content $ level = 3; $ size = 4; $ errorCorrectionLevel = intval ($ level ); // fault tolerance level $ matrixPointSize = intval ($ size); // Generate Image size $ object-> png ($ url, false, $ errorCorrectionLevel, $ matrixPointSize, 2 );}

Advanced use with logo:

Public function qrcode () {Vendor ('phpqrcode. phpqrcode '); // Generate a QR code image $ object = new \ QRcode (); $ qrcode_path = ''; $ file_tmp_name =''; $ errors = array (); if (! Empty ($ _ POST) {$ content = trim ($ _ POST ['content']); // QR code content $ contentSize = $ this-> getStringLength ($ content ); if ($ contentSize> 150) {$ errors [] = 'The number of words is too long and cannot exceed 150 characters! ';} If (isset ($ _ FILES ['upimage'] ['tmp _ name']) & $ _ FILES ['upload'] ['tmp _ name'] & is_uploaded_file ($ _ FILES ['upload'] ['tmp _ name']) {if ($ _ FILES ['upimage'] ['size']> 512000) {$ errors [] = "your uploaded file is too large to exceed 500 KB. ";}$ File_tmp_name = $ _ FILES ['upimag'] ['tmp _ name']; $ fileext = array (" image/pjpeg "," image/jpeg ", "image/gif", "image/x-png", "image/png"); if (! In_array ($ _ FILES ['upimage'] ['type'], $ fileext) {$ errors [] = "the file you uploaded is incorrectly formatted and only supports png, jpg and gif formats. ";}}$ Tpgs =$ _ POST ['tpg']; // image format $ qrcode_bas_path = 'upload/qrcode/'; if (! Is_dir ($ qrcode_bas_path) {mkdir ($ qrcode_bas_path, 0777, true);} $ uniqid_rand = date ("Ymdhis "). uniqid (). rand (1,1000); $ qrcode_path = $ qrcode_bas_path. $ uniqid_rand. "_ 1. ". $ tpgs; // original image path $ qrcode_path_new = $ qrcode_bas_path. $ uniqid_rand. "_ 2. ". $ tpgs; // The Image path of the QR code, if (Helper: getOS () = 'Linux ') {$ mv = move_uploaded_file ($ file_tmp_name, $ qrcode_path );} else {// solve the problem of garbled Chinese file names in windows $ save_path = Helper: safeEncoding ($ Qrcode_path, 'gb2312'); if (! $ Save_path) {$ errors [] = 'upload failed. please try again! ';} $ Mv = move_uploaded_file ($ file_tmp_name, $ qrcode_path);} if (empty ($ errors) {$ errorCorrectionLevel = $ _ POST ['errorcorrectionlevel']; // fault tolerance level $ matrixPointSize =$ _ POST ['matrixpointsize']; // generate the image size $ matrixMarginSize =$ _ POST ['matrixmarginsize']; // margin size // Generate a QR code image $ object: png ($ content, $ qrcode_path_new, $ errorCorrectionLevel, $ matrixPointSize, $ matrixMarginSize); $ QR = $ qrcode_path_new; // generated original QR code diagram $ logo = $ qrcode_path; // prepared logo image if (file_exists ($ logo )) {$ QR = imagecreatefromstring (file_get_contents ($ QR); $ logo = imagecreatefromstring (file_get_contents ($ logo); $ QR_width = imagesx ($ QR ); // QR code image width $ QR_height = imagesy ($ QR); // QR code image height $ logo_width = imagesx ($ logo ); // logo image width $ logo_height = imagesy ($ logo); // logo image height $ logo_qr_width = $ QR_width/5; $ scale = $ logo_width/$ logo_qr_width; $ logo_qr_height = $ logo_height/$ scale; $ from_width = ($ QR_width-$ logo_qr_width)/2; // re-combine the image and resize imagecopyresampled ($ QR, $ logo, $ from_width, $ from_width, 0, 0, $ logo_qr_width, $ logo_qr_height, $ logo_width, $ logo_height); // output image // header ("Content-type: image/png "); imagepng ($ QR, $ qrcode_path); imagedestroy ($ QR);} else {$ qrcode_path = $ qrcode_path_new ;}} else {$ qrcode_path = ''; }}$ data = array ('data' => array ('errors '=> $ errors, 'qrcode _ path' => $ qrcode_path); $ this-> assign ('data', $ data); $ this-> display ();

Demo address: http://www.shouce.ren/tool/qrcode

Helper class Helper Address: http://www.thinkphp1.cn/topic/34875.html