主要代码如下，可直接复制调试参数：
//查询当前用户是否有分销海报
public function user_poster(){
$this->checkAuth();
//查询会员信息
$user = $this->getUserInfoById($this->user_id);
if(!empty($user['distribution_img'])){
$result['data'] = $user['distribution_img'];
}else{
$result = $this->getDistributorImg();
}
$this->success("请求成功!", $result);
}
//获取小程序分享二维码--分销海报
public function getDistributorImg()
{
try{
//查询会员信息
$userinfo = $this->getUserInfoById($this->user_id);
$url = $this->request->get('url');
$save_dir = 'upload/qr_code/user_share/';
$save_key = 'uid'.$userinfo['id'];
$img_src = md5($save_key) . '.png';
$poster_config = $this->userShareConfig();
$poster_url = root_path().'public/'.$save_dir . $img_src;
//生成小程序二维码
$res = $this->makeUserMnpQrcode($userinfo,$save_key,$img_src);
if(true !== $res){
return ['status' => 0, 'msg' => '微信配置错误：'.$res, 'data' => ''];
}
$background_img = root_path().'public/images/share_user_bg.png';
$user_avatar = root_path().'public/images/default_logo.jpg';
$qr_code_logic = new MemberController();
//获取背景图
$share_background_img = imagecreatefromstring(file_get_contents($background_img));
//合成头像
$qr_code_logic->writeImg($share_background_img, $user_avatar, $poster_config['head_pic'],true);
//合成昵称
$nickname = self::filterEmoji($userinfo['nickname']);
$qr_code_logic->writeText($share_background_img, $nickname, $poster_config['nickname']);
//长按识别
$notice = '长按识别二维码 >>';
$qr_code_logic->writeText($share_background_img, $notice, $poster_config['notice']);
//合成商品标题
$title = self::auto_adapt($poster_config['title']['font_size'], 0, $poster_config['title']['font_face'], '邀请你一起来赚大钱', $poster_config['title']['w'],$poster_config['title']['y'],getimagesize($background_img));
$qr_code_logic->writeText($share_background_img, $title, $poster_config['title']);
//邀请码
$qr_code_logic->writeText($share_background_img, '邀请码 '.$userinfo['distribution_code'], $poster_config['code_text']);
//合成二维码
$qr_code_logic->writeImg($share_background_img, $poster_url, $poster_config['qr'],false);
imagepng($share_background_img, $poster_url);
$file_name = 'public/'.$save_dir . $img_src;
$result['data'] = $file_name;
$dis_oss_img = $this->local_upload($result['data']);
//更新会员分销海报信息
$dis_oss_img = cmf_get_asset_url($dis_oss_img);
$this->up_member(['distribution_img' => $dis_oss_img]);
//上传oss
$result['data'] = $dis_oss_img;
return $result;
}catch(Exception $e){
return ['status' => 0, 'msg' => $e->getMessage(), 'data' => ''];
}
}
public function up_member($params)
{
$this->checkAuth();
$this->MemberModel = new MemberModel();
$params['update_time'] = time();
$member = $this->getUserInfoByOpenid($this->openid);
if (empty($member)) $this->error("该会员不存在!");
$result = $this->MemberModel->where('id', $member['id'])->strict(false)->update($params);
if ($result) {
$result = $this->getUserInfoById($this->user_id);
return true;
} else {
return false;
}
}
需要引用的方法
/*
* 生成海报自动适应标题
*/
public function auto_adapt($size, $angle = 0, $fontfile, $string, $width, $height, $bg_height)
{
$content = "";
// 将字符串拆分成一个个单字 保存到数组 letter 中
for ($i = 0; $i < mb_strlen($string); $i++) {
$letters[] = mb_substr($string, $i, 1);
}
foreach ($letters as $letter) {
$str = $content . " " . $letter;
$box = imagettfbbox($size, $angle, $fontfile, $str);
$total_height = $box[1] + $height;
if ($bg_height[1] - $total_height < $size) {
break;
}
//右下角X位置,判断拼接后的字符串是否超过预设的宽度
if (($box[2] > $width) && ($content !== "")) {
if ($bg_height[1] - $total_height < $size * 2) {
break;
}
$content .= "\n";
}
$content .= $letter;
}
return $content;
}
//写入文字
public function writeText($poster, $text, $config){
$font_uri = $config['font_face'];
$font_size = $config['font_size'];
$color = substr($config['color'],1);
//颜色转换
$color= str_split($color, 2);
$color = array_map('hexdec', $color);
if (empty($color[3]) || $color[3] > 127) {
$color[3] = 0;
}
//写入文字
$font_col = imagecolorallocatealpha($poster, $color[0], $color[1], $color[2], $color[3]);
imagettftext($poster, $font_size,0, $config['x'], $config['y'], $font_col, $font_uri, $text);
return $poster;
}
/**
* Notes:去掉名称中的表情
* @param $str
* @return string|string[]|null
* @author: cjhao 2021/3/29 15:56
*/
public function filterEmoji($str)
{
$str = preg_replace_callback(
'/./u',
function (array $match) {
return strlen($match[0]) >= 4 ? '' : $match[0];
},
$str);
return $str;
}
public function makeUserMnpQrcode($userinfo,$save_key,$img_src) {
try {
$config = cmf_get_option('weipay');
$wechatC['app_id'] = $config['wx_mini_app_id'];
$wechatC['secret'] = $config['wx_mini_app_secret'];
$app = Factory::miniProgram($wechatC);
$code = $userinfo['distribution_code']; //邀请码
$response = $app->app_code->get('pages/index/index'.'?invite_code='.$code, [
'width' => 170,
]);
if ($response instanceof \EasyWeChat\Kernel\Http\StreamResponse) {
$response->saveAs('upload/qr_code/user_share/', $img_src);
return true;
}
if(isset($response['errcode']) && 41030 === $response['errcode']){
return '商城小程序码，先提交审核并通过';
}
return $response['errmsg'];
} catch (\EasyWeChat\Kernel\Exceptions\Exception $e){
return $e->getMessage();
}
}
//写入图片
public function writeImg($poster, $img_uri, $config, $is_rounded = false){
$pic_img = imagecreatefromstring(file_get_contents($img_uri));
$is_rounded?$pic_img = self::rounded_corner($pic_img):'';//切成圆角返回头像资源
$pic_w = imagesx($pic_img);
$pic_h = imagesy($pic_img);
//圆形头像大图合并到海报
imagecopyresampled($poster, $pic_img,
$config['x'],
$config['y'],
0, 0,
$config['w'],
$config['h'],
$pic_w,
$pic_h
);
return $poster;
}
/**
* 将图片切成圆角
*/
public function rounded_corner($src_img)
{
$w = imagesx($src_img);//微信头像宽度 正方形的
$h = imagesy($src_img);//微信头像宽度 正方形的
$w = min($w, $h);
$h = $w;
$img = imagecreatetruecolor($w, $h);
//这一句一定要有
imagesavealpha($img, true);
//拾取一个完全透明的颜色,最后一个参数127为全透明
$bg = imagecolorallocatealpha($img, 255, 255, 255, 127);
imagefill($img, 0, 0, $bg);
$r = $w / 2; //圆半径
// $y_x = $r; //圆心X坐标
// $y_y = $r; //圆心Y坐标
for ($x = 0; $x < $w; $x++) {
for ($y = 0; $y < $h; $y++) {
$rgbColor = imagecolorat($src_img, $x, $y);
if (((($x - $r) * ($x - $r) + ($y - $r) * ($y - $r)) < ($r * $r))) {
imagesetpixel($img, $x, $y, $rgbColor);
}
}
}
unset($src_img);
return $img;
}
//用户图片配置
public function userShareConfig()
{
return [
//会员头像
'head_pic' => [
'w' => 80, 'h' => 80, 'x' => 30, 'y' => 680,
],
//会员昵称
'nickname' => [
'color' => '#333333', 'font_face' => root_path().'public/font/SourceHanSansCN-Regular.otf', 'font_size' => 20, 'x' => 120, 'y' => 730,
],
//标题
'title' => [
'color' => '#333333', 'font_face' => root_path().'public/font/SourceHanSansCN-Regular.otf', 'font_size' => 20, 'w' => 360, 'x' => 30, 'y' => 810,
],
//提醒长按扫码
'notice' => [
'color' => '#333333', 'font_face' => root_path().'public/font/SourceHanSansCN-Regular.otf', 'font_size' => 20, 'x' => 30, 'y' => 880,
],
//邀请码文本
'code_text' => [
'color' => '#FF2C3C', 'font_face' => root_path().'public/font/SourceHanSansCN-Regular.otf', 'font_size' => 20, 'x' => 355, 'y' => 930,
],
//二维码
'qr' => [
'w' => 170,'h' => 170, 'x' => 370, 'y' => 730,
],
];
}
最终效果：
