组合参数方法：

/*** [user_qrcode 参数组合]* @param  [type]  $bgImg   [背景图]* @param  [type]  $codeImg [二维码]* @param  string  $name    [名称]* @param  string  $remask  [备注]* @param  string  $content [描述]* @param  integer $key     [生成二维码名称表示]* @return [type]           [description]*/
public function user_qrcode($bgImg,$codeImg,$name="我是小洪帽",$remask="邀请您加入XXX 购买有惊喜",$content="长按识别或扫描二维码进入",$key=0){$config = array('text'=>array(array('text'=>$name,'left'=>250,'top'=>815,'fontPath'=>'/public/upload/ttf/simhei.ttf', //字体文件需要增加去下载引入使用'fontSize'=>22,          //字号'fontColor'=>'0,0,0',    //字体颜色'angle'=>0,'text-aligin' => 'left'),array('text'=>$remask,'left'=>250,'top'=>860,'fontPath'=>'/public/upload/ttf/simhei.ttf', //字体文件需要增加去下载引入使用'fontSize'=>18,             //字号'fontColor'=>'143,143,143',    //字体颜色'angle'=>0,'text-aligin' => 'left'),array('text'=>'—— '.$content.' ——','left'=>0,'right'=>0,'top'=>970,'fontPath'=>'/public/upload/ttf/simhei.ttf', //字体文件需要增加去下载引入使用'fontSize'=>16,             //字号'fontColor'=>'169,169,169',    //字体颜色'angle'=>0,'text-aligin' => 'center'  //字体居中，只有center有效果，其他无)),'image'=>array(array('url'=>$codeImg,       //图片资源路径'stream'=>0,'left'=>50,'top'=>740,'right'=>0,'bottom'=>0,'width'=>180,'height'=>180,'opacity'=>100),),'background'=>$bgImg,);$filename = "/public/upload/share_code/".time().rand(0000,9999).$num.".png";return $this->createPoster($config,$filename);}

海报合成方法

/*** 生成宣传海报* @param  array    参数,包括图片和文字* @param  string   $filename 生成海报文件名,不传此参数则不生成文件,直接输出图片* @return [type] [description]*/public function createPoster($config=array(),$filename=""){//如果要看报什么错，可以先注释调这个header if(empty($filename)) header("content-type: image/png");$imageDefault = array('left'=>0,'top'=>0,'right'=>0,'bottom'=>0,'width'=>100,'height'=>100,'opacity'=>100);$textDefault =  array('text'=>'','left'=>0,'top'=>0,'fontSize'=>32,             //字号'fontColor'=>'255,255,255', //字体颜色'angle'=>0,);$background = $config['background'];//海报最底层得背景  //背景方法$backgroundInfo = getimagesize($background);$backgroundFun = 'imagecreatefrom'.image_type_to_extension($backgroundInfo[2], false);$background = $backgroundFun($background);$backgroundWidth = imagesx($background);    //背景宽度$backgroundHeight = imagesy($background) + 300;   //背景高度，这里增加300的高度，底部白色区域$imageRes = imageCreatetruecolor($backgroundWidth,$backgroundHeight); $color = imagecolorallocate($imageRes, 255, 255, 255);  imagefill($imageRes, 0, 0, $color);  // imageColorTransparent($imageRes, $color);    //颜色透明imagecopyresampled($imageRes,$background,0,0,0,0,imagesx($background),imagesy($background),imagesx($background),imagesy($background));//处理了图片if(!empty($config['image'])){foreach ($config['image'] as $key => $val) {$val = array_merge($imageDefault,$val);$info = getimagesize($val['url']);$function = 'imagecreatefrom'.image_type_to_extension($info[2], false);if($val['stream']){     //如果传的是字符串图像流$info = getimagesizefromstring($val['url']);$function = 'imagecreatefromstring';}$res = $function($val['url']);$resWidth = $info[0];$resHeight = $info[1];//建立画板 ，缩放图片至指定尺寸$canvas=imagecreatetruecolor($val['width'], $val['height']); imagefill($canvas, 0, 0, $color);//关键函数，参数（目标资源，源，目标资源的开始坐标x,y, 源资源的开始坐标x,y,目标资源的宽高w,h,源资源的宽高w,h） imagecopyresampled($canvas, $res, 0, 0, 0, 0, $val['width'], $val['height'],$resWidth,$resHeight); $val['left'] = $val['left']<0?$backgroundWidth- abs($val['left']) - $val['width']:$val['left'];$val['top'] = $val['top']<0?$backgroundHeight- abs($val['top']) - $val['height']:$val['top'];//放置图像imagecopymerge($imageRes,$canvas, $val['left'],$val['top'],$val['right'],$val['bottom'],$val['width'],$val['height'],$val['opacity']);//左，上，右，下，宽度，高度，透明度 }}//处理文字if(!empty($config['text'])){foreach ($config['text'] as $key => $val) {$val = array_merge($textDefault,$val);list($R,$G,$B) = explode(',', $val['fontColor']);$fontColor = imagecolorallocate($imageRes, $R, $G, $B); if($val['text-aligin'] == 'center'){$fontBox = imagettfbbox($val['fontSize'], 0, $val['fontPath'], $val['text']);//获取文字所需的尺寸大小//垂直水平居中//imagettftext($imageRes, $val['fontSize'], $val['angle'], ceil(($backgroundWidth - $fontBox[2]) / 2), ceil(($backgroundHeight - $fontBox[1] - $fontBox[7]) / 2), $fontColor, $val['fontPath'], $val['text']);//水平居中imagettftext($imageRes, $val['fontSize'], $val['angle'], ceil(($backgroundWidth - $fontBox[2]) / 2), $val['top'], $fontColor, $val['fontPath'], $val['text']);}else{$val['left'] = $val['left']<0?$backgroundWidth- abs($val['left']):$val['left'];$val['top'] = $val['top']<0?$backgroundHeight- abs($val['top']):$val['top'];imagettftext($imageRes,$val['fontSize'],$val['angle'],$val['left'],$val['top'],$fontColor,$val['fontPath'],$val['text']);}}}   //生成图片  if(!empty($filename)){$res = imagepng($imageRes,ROOT_PATH.$filename); //保存到本地imagedestroy($imageRes);if(!$res) return false;return $filename;}else{imagepng ($imageRes);          //在浏览器上显示imagedestroy($imageRes);}  }

效果图：