php生成海报和指定文字-编程知识

php生成海报和指定文字

    public function createPoster($parmas){$content = mb_convert_encoding('这是一张海报', "html-entities", "utf-8");$config = array('text'=>array(array('text'=>$content,'left'=>500,'top'=>100,'fontPath'=>'C:\Users\ahuyikao\Desktop\Alibaba-PuHuiTi-Medium.ttf',     //字体文件'fontSize'=>50,             //字号'fontColor'=>'14,14,14',       //字体颜色'angle'=>0,)),'image'=>array(array('url'=>'./z.png',     //二维码资源'stream'=>0,'left'=>300,'top'=>10,'right'=>0,'bottom'=>0,'width'=>380,'height'=>200,'opacity'=>70)),'background'=>'https://ahuyikao-pub.cdn.bcebos.com/project/xcx/ahu_dossier/sculptureImg/tmp_31a6762f684d1d232c092f6dd3cdbb6f.jpg'          //背景图);$filename = './'.time().'.jpg';
//echo createPoster($config,$filename);echo $this->createPosters($config);}public function createPosters($config=array(),$filename=""){//如果要看报什么错，可以先注释调这个headerif(empty($filename)) header("content-type: image/png");$imageDefault = array('left'=>0,'top'=>0,'right'=>0,'bottom'=>0,'width'=>100,'height'=>100,'opacity'=>100);$textDefault = array('text'=>'','left'=>0,'top'=>0,'fontSize'=>32,       //字号'fontColor'=>'255,255,255', //字体颜色'angle'=>0,//文字角度 顺时针计算，0 度为水平(由左到右)，90 度则为由下到上的文字；);$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);  //背景高度$imageRes = imageCreatetruecolor($backgroundWidth,$backgroundHeight);$color = imagecolorallocate($imageRes, 0, 0, 0);imagefill($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);$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, $B);$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 = imagejpeg ($imageRes,$filename,90); //保存到本地imagedestroy($imageRes);if(!$res) return false;return $filename;}else{imagejpeg ($imageRes);     //在浏览器上显示imagedestroy($imageRes);}}

效果图如下