前期准备
- 引入phpqrcode类库(下载地址:https://download.csdn.net/download/weixin_37557729/11891240;支持彩色二维码的下载地址:https://download.csdn.net/download/weixin_37557729/11891244)
- PHP开启GD扩展库支持
1、利用phpqrcode生成二维码:
原理分析:
下载下来的类文件是一个压缩包,包含很多文件和演示程序,我们只需要里边的phpqrcode.php
这一个文件就可以生成二维码了,它是一个多个类的集合文件,我们需要用到里边的QRcode类的png()方法:
//测试生成带头像的网站二维码海报 public function ce_haibao_qrcode(){ $codeurl = "https://www.baidu.com"; Vendor('PHPQRcode.class#phpqrcode'); $logoQR = "http://thirdwx.qlogo.cn/mmopen/vi_32/icaYhiapVcmsyGnHouHeSvYiaz8yxtvfBicgx5x8joGh4uNiaibp8skQf8Uv4CNtibsJDndbOQwI9LSvDQP6slFQaLy4g/132"; $level=3; $size=6$errorCorrectionLevel =intval($level) ;容错级别 $matrixPointSize = $size);生成图片大小 $dirPath ='./Uploads/qrcode/'.date('Y-m-d').'/';保存二维码路径 $dirPath_B ='/Uploads/qrcode/'.保存二维码路径 if(!file_exists($dirPath)){ mkdir($dirPath,0777); } $tmpName = time().".png"; 保存在服务器上的二维码名称 $qrcodeName = $dirPath .$tmpName; 保存在服务器上的二维码路径 $qrcodeName_B = $dirPath_B .保存在服务器上的二维码路径 //生成二维码图片 $object = new \QRcode(); $object->png($codeurl,$qrcodeName,1)">$errorCorrectionLevel,1)">$matrixPointSize,2); $QR = imagecreatefrompng($qrcodeName); $QR = $qrcodeName$QRlogoPath = './Uploads/qrcode/qrlogo/'.date('Y-m-d').'/'$QRlogoPath_B = '/Uploads/qrcode/qrlogo/'.; $QRlogoPath$QRlogoPath,1)">$qrcode = time().'.png'$QRlogo = $QRlogoPath .$qrcode$QRlogo_B = $QRlogoPath_B .if($logoQR !==FALSE){ $QR = imagecreatefromstring(file_get_contents($QR)); $logo = imagecreatefromstring($logoQR)); $QR_width = imagesx($QR);二维码图片宽度 $QR_height = imagesy(二维码图片高度 $logo_width = imagesx($logo);logo图片宽度 $logo_height = imagesy(logo图片高度 $logo_qr_width = $QR_width / 5; $scale = $logo_width/$logo_qr_width$logo_qr_height = $logo_height/$scale$from_width = ($QR_width - $logo_qr_width) / 2; 重新组合图片并调整大小 imagecopyresampled($QR,1)">$logo,1)">$from_width,1)">$logo_qr_width,1)">$logo_qr_height,1)">$logo_width,1)">$logo_height); header('Content-type: image/png');
//合成带logo的二维码 ImagePng($QRlogo); $dst_path = './Uploads/haibao/haibao.png';海报素材底图 $src_path = $QRlogo; 覆盖图,用上面的那张图QRlogo $haibaoPath = './Uploads/qrcode/haibao/'.$haibaoPath_B = '/Uploads/qrcode/haibao/'.date('Y-m-d').'/'; $haibaoPath)){ $haibaoPath,1)">); } $haibao = $haibao = $haibaoPath .$haibao$haibao_B = $haibaoPath_B .$haibao; //创建图片实例 $dst = imagecreatefromstring($dst_path));海报 $src = imagecreatefromstring($src_path));二维码 //获取覆盖图的宽高 list($src_w,1)">$src_h) = getimagesize($src_path获取海报的宽高 $dst_w,1)">$dst_h) = $dst_path); imagecopymerge($dst,$src,20,120,$src_w,$src_h,100); imagecopymerge($dst,1)">$src,($dst_w-$src_w)/2,1)">$dst_h-100-$src_h,100); imagepng($haibao);生成图片并保存到服务器上 合成的海报 imagedestroy($dst); imagedestroy($src); substr($haibao,1);去掉左边第一个小点 $arr['msg'] = echo json_encode($arr);exit; } }