生成微信小程序二维码的代码（注意：ROOT_PATH是本地绝对路径，请勿使用url）

注意：如果二维码是动态生成本地，要注意文件权限！！！

  1. public static function createWxQrcode($params)
  2.     {
  3.         //配置APPID、APPSECRET
  4.         $APPID = "";
  5.         $APPSECRET = "";
  6.         //获取access_token
  7.         $access_token = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$APPID&secret=$APPSECRET";
  9.         //缓存access_token
  10.         session_start();
  11.         $_SESSION['access_token'] = "";
  12.         $_SESSION['expires_in'] = 0;
  14.         if (!isset($_SESSION['access_token']) || (isset($_SESSION['expires_in']) && time() > $_SESSION['expires_in'])) {
  16.             $json = httpRequest($access_token, 'POST');
  17.             $json = json_decode($json, true);
  18.             // var_dump($json);
  19.             $_SESSION['access_token'] = $json['access_token'];
  20.             $_SESSION['expires_in'] = time() + 7200;
  21.             $ACCESS_TOKEN = $json["access_token"];
  22.         } else {
  24.             $ACCESS_TOKEN = $_SESSION["access_token"];
  25.         }
  27.         //构建请求二维码参数
  28.         //path是扫描二维码跳转的小程序路径，可以带参数?id=xxx
  29.         //width是二维码宽度
  30.         $qcode = "https://api.weixin.qq.com/wxa/getwxacode?access_token=$ACCESS_TOKEN";
  31.         $param = json_encode(array("path" => "pages/routeDetail/index?id={$params['line_id']}&recom_uid={$params['user_id']}", "width" => 100));
  33.         //POST参数
  34.         $result = httpRequest($qcode, "POST", $param);
  35.         $filename = ROOT_PATH . 'public/uploads/qrcode/' . $params['line_id'] . '_' . $params['user_id'] . '_qrcode_wx.png';
  36.         //生成二维码
  37.         file_put_contents($filename, $result);
  38.         $image = '/uploads/qrcode/' . $params['line_id'] . '_' . $params['user_id'] . '_qrcode_wx.png';
  39.         $base64_image = "data:image/jpeg;base64," . base64_encode($result);
  40.         #echo $base64_image;
  41.         return $image;
  42.     }

PHP合并图片生成海报的代码

  1. public static function createMiniWechat($params)
  2.     {
  3.         $config = array(
  4.             'image' => array(
  5.                 array(
  6.                     'url' => ROOT_PATH . 'public' . DS . $params['wx_image'],     //二维码地址
  7.                     'is_yuan' => true,          //true图片圆形处理
  8.                     'stream' => 0,
  9.                     'left' => 280,               //小于0为小平居中
  10.                     'top' => 400,
  11.                     'right' => 0,
  12.                     'width' => 100,             //图像宽
  13.                     'height' => 100,            //图像高
  14.                     'opacity' => 100            //透明度
  15.                 ),
  16.                 array(
  17.                     'url' => $image_arr[0],     //素材地址
  18.                     'is_yuan' => false,          //true图片圆形处理
  19.                     'stream' => 0,
  20.                     'left' => 0,               //小于0为小平居中
  21.                     'top' => 10,
  22.                     'right' => 0,
  23.                     'width' => 400,             //图像宽
  24.                     'height' => 250,            //图像高
  25.                     'opacity' => 100            //透明度
  26.                 ),
  27.             ),
  28.             'text' => array(
  29.                 array(
  30.                     'text' => $lineInfo->title,            //文字内容
  31.                     'left' => 10,                              //小于0为小平居中
  32.                     'top' => 290,
  33.                     'fontSize' => 14,                         //字号
  34.                     'fontColor' => '0,0,0',                //字体颜色
  35.                     'angle' => 0,
  36.                     'fontPath' => ROOT_PATH . 'public/assets/fonts/fzltxh.ttf',     //字体文件
  37.                 ),
  38.                 array(
  39.                     'text' => $date,            //文字内容
  40.                     'left' => 10,                              //小于0为小平居中
  41.                     'top' => 340,
  42.                     'fontSize' => 12,                         //字号
  43.                     'fontColor' => '169,169,169',                //字体颜色
  44.                     'angle' => 0,
  45.                     'fontPath' => ROOT_PATH . 'public/assets/fonts/fzltxh.ttf',     //字体文件
  46.                 ),
  47.                 array(
  48.                     'text' => '￥' . $price,            //文字内容
  49.                     'left' => 10,                              //小于0为小平居中
  50.                     'top' => 365,
  51.                     'fontSize' => 14,                         //字号
  52.                     'fontColor' => '255,20,147',                //字体颜色
  53.                     'angle' => 0,
  54.                     'fontPath' => ROOT_PATH . 'public/assets/fonts/fzltxh.ttf',     //字体文件
  55.                 ),
  56.                 array(
  57.                     'text' => '长按识别小程序码访问',            //文字内容
  58.                     'left' => 10,                              //小于0为小平居中
  59.                     'top' => 435,
  60.                     'fontSize' => 14,                         //字号
  61.                     'fontColor' => '0,0,0',                //字体颜色
  62.                     'angle' => 0,
  63.                     'fontPath' => ROOT_PATH . 'public/assets/fonts/fzltxh.ttf',     //字体文件
  64.                 ),
  65.                 array(
  66.                     'text' => '全新体验',            //文字内容
  67.                     'left' => 10,                              //小于0为小平居中
  68.                     'top' => 470,
  69.                     'fontSize' => 13,                         //字号
  70.                     'fontColor' => '169,169,169',                //字体颜色
  71.                     'angle' => 0,
  72.                     'fontPath' => ROOT_PATH . 'public/assets/fonts/fzltxh.ttf',     //字体文件
  73.                 )
  74.             ),
  75.             'background' => ROOT_PATH . 'public/assets/img/bj.jpg',          //背景图
  76.         );
  77.         $filename = ROOT_PATH . 'public/uploads/qrcode/' . $params['line_id'] . '_' . $params['user_id'] . '_qrcode.png';
  78.         //echo createPoster($config);
  79.         //$filename为空是真接浏览器显示图片
  80.         $rest = createPoster1($config, $filename);
  81.         if ($rest) {
  82.             $image = '/uploads/qrcode/' . $params['line_id'] . '_' . $params['user_id'] . '_qrcode.png';
  83.             db('qrcode_record')->insert(['user_id' => $params['user_id'], 'line_id' => $params['line_id'], 'image' => $image, 'create_time' => time()]);
  84.             return $image;
  85.         }
  86.         return false;
  87.     }

合成宣传海报

  1. /**
  2.  * 生成宣传海报
  3.  * @param array  参数,包括图片和文字
  4.  * @param string $filename 生成海报文件名,不传此参数则不生成文件,直接输出图片
  5.  * @return [type] [description]
  6.  */
  7. function createPoster1($config = array(), $filename = "")
  8. {
  9.     //如果要看报什么错，可以先注释调这个header
  10.     //if(empty($filename)) header("content-type: image/png");
  11.     if (empty($filename)) header("content-type: image/png");
  12.     $imageDefault = array(
  13.         'left' => 0,
  14.         'top' => 0,
  15.         'right' => 0,
  16.         'bottom' => 0,
  17.         'width' => 100,
  18.         'height' => 100,
  19.         'opacity' => 100
  20.     );
  21.     $textDefault = array(
  22.         'text' => '',
  23.         'left' => 0,
  24.         'top' => 0,
  25.         'fontSize' => 32, //字号
  26.         'fontColor' => '255,255,255', //字体颜色
  27.         'angle' => 0,
  28.     );
  29.     $background = $config['background']; //海报最底层得背景
  30.     //背景方法
  31.     $backgroundInfo = getimagesize($background);
  32.     $backgroundFun = 'imagecreatefrom' . image_type_to_extension($backgroundInfo[2], false);
  33.     $background = $backgroundFun($background);
  34.     $backgroundWidth = imagesx($background); //背景宽度
  35.     $backgroundHeight = imagesy($background); //背景高度
  36.     $imageRes = imageCreatetruecolor($backgroundWidth, $backgroundHeight);
  37.     $color = imagecolorallocate($imageRes, 0, 0, 0);
  38.     imagefill($imageRes, 0, 0, $color);
  39.     imagecopyresampled($imageRes, $background, 0, 0, 0, 0, imagesx($background), imagesy($background), imagesx($background), imagesy($background));
  40.     //处理了图片
  41.     if (!empty($config['image'])) {
  42.         foreach ($config['image'] as $key => $val) {
  43.             $val = array_merge($imageDefault, $val);
  44.             $info = getimagesize($val['url']);
  45.             $function = 'imagecreatefrom' . image_type_to_extension($info[2], false);
  46.             if ($val['stream']) { //如果传的是字符串图像流
  47.                 $info = getimagesizefromstring($val['url']);
  48.                 $function = 'imagecreatefromstring';
  49.             }
  50.             $res = $function($val['url']);
  51.             $resWidth = $info[0];
  52.             $resHeight = $info[1];
  53.             //建立画板 ，缩放图片至指定尺寸
  54.             $canvas = imagecreatetruecolor($val['width'], $val['height']);
  55.             imagefill($canvas, 0, 0, $color);
  56.             //如果是透明的gif或png做透明处理
  57.             $ext = pathinfo($val['url']);
  58.             if (array_key_exists('extension', $ext)) {
  59.                 if ($ext['extension'] == 'gif' || $ext['extension'] == 'png') {
  60.                     imageColorTransparent($canvas, $color); //颜色透明
  62.                 }
  63.             }
  64.             //关键函数，参数（目标资源，源，目标资源的开始坐标x,y, 源资源的开始坐标x,y,目标资源的宽高w,h,源资源的宽高w,h）
  65.             imagecopyresampled($canvas, $res, 0, 0, 0, 0, $val['width'], $val['height'], $resWidth, $resHeight);
  66.             //$val['left'] = $val['left']<0?$backgroundWidth- abs($val['left']) - $val['width']:$val['left'];
  67.             //如果left小于-1我这做成了计算让其水平居中
  68.             if ($val['left'] < 0) {
  69.                 $val['left'] = ceil($backgroundWidth - $val['width']) / 2;
  70.             }
  71.             $val['top'] = $val['top'] < 0 ? $backgroundHeight - abs($val['top']) - $val['height'] : $val['top'];
  72.             //放置图像
  73.             imagecopymerge($imageRes, $canvas, $val['left'], $val['top'], $val['right'], $val['bottom'], $val['width'], $val['height'], $val['opacity']); //左，上，右，下，宽度，高度，透明度
  75.         }
  76.     }
  77.     //处理文字
  78.     if (!empty($config['text'])) {
  79.         foreach ($config['text'] as $key => $val) {
  80.             $val = array_merge($textDefault, $val);
  81.             list($R, $G, $B) = explode(',', $val['fontColor']);
  82.             $fontColor = imagecolorallocate($imageRes, $R, $G, $B);
  83.             //$val['left'] = $val['left']<0?$backgroundWidth- abs($val['left']):$val['left'];
  84.             //如果left小于-1我这做成了计算让其水平居中
  85.             $text = autowrap($val['fontSize'], 0, $val['fontPath'], $val['text'], 390);
  86.             if ($val['left'] < 0) {
  87.                 $fontBox = imagettfbbox($val['fontSize'], 0, $val['fontPath'], $text); //文字水平居中实质
  88.                 $val['left'] = ceil(($backgroundWidth - $fontBox[2]) / 2); //计算文字的水平位置
  90.             }
  91.             $val['top'] = $val['top'] < 0 ? $backgroundHeight - abs($val['top']) : $val['top'];
  92.             imagettftext($imageRes, $val['fontSize'], $val['angle'], $val['left'], $val['top'], $fontColor, $val['fontPath'], $text);
  93.         }
  94.     }
  95.     //生成图片
  96.     if (!empty($filename)) {
  97.         $res = imagejpeg($imageRes, $filename, 90); //保存到本地
  98.         imagedestroy($imageRes);
  99.         if (!$res) return false;
  100.         return $filename;
  101.     } else {
  102.         header("Content-type:image/png");
  103.         imagejpeg($imageRes); //在浏览器上显示
  104.         imagedestroy($imageRes);
  105.     }
  106. }
  1. function autowrap($fontsize, $angle, $fontface, $string, $width)
  2. {
  3. // 这几个变量分别是 字体大小, 角度, 字体名称, 字符串, 预设宽度
  4. $content = "";
  6. // 将字符串拆分成一个个单字 保存到数组 letter 中
  7. for ($i = 0; $i < mb_strlen($string); $i++) {
  8. $letter[] = mb_substr($string, $i, 1);
  9. }
  11. foreach ($letter as $l) {
  12. $teststr = $content . " " . $l;
  13. $testbox = imagettfbbox($fontsize, $angle, $fontface, $teststr);
  14. // 判断拼接后的字符串是否超过预设的宽度
  15. if (($testbox[2] > $width) && ($content !== "")) {
  16. $content .= "\n";
  17. }
  18. $content .= $l;
  19. }
  20. return $content;
  21. }

fzltxh.rar

效果图：

image.png