php生成海报和指定文字的示例代码
作者:专属n
这篇文章主要给大家介绍如何使用php生成海报和指定文字,文中有详细的示例代码,对大家的学习或工作有一定的帮助,具有一定的参考价值,感兴趣的同学可以自己动手试一下
示例代码:
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,//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
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