一、生成海报方法
<?php namespace App\Service; /*生成海报*/ class GeneratePoster { /** * 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); //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); 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); $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); } } }
二、调用生成
use App\Service\GeneratePoster; 。。。。。。。。。 public function generatePoster() { $generate=new GeneratePoster(); $config = array( ‘text‘=>array( array( ‘text‘=>‘昵称‘, ‘left‘=>182, ‘top‘=>105, ‘fontPath‘=>‘font/simhei.ttf‘, //字体文件 ‘fontSize‘=>18, //字号 ‘fontColor‘=>‘255,0,0‘, //字体颜色 ‘angle‘=>0, ) ), ‘image‘=>array( array( ‘url‘=>‘font/xcx.jpg‘, //图片资源路径 ‘left‘=>100, ‘top‘=>335, ‘stream‘=>0, //图片资源是否是字符串图像流 ‘right‘=>0, ‘bottom‘=>0, ‘width‘=>100, ‘height‘=>100, ‘opacity‘=>100 ), array( ‘url‘=>‘https://wx.qlogo.cn/mmopen/vi_32/DYAIOgq83eofD96opK97RXwM179G9IJytIgqXod8jH9icFf6Cia6sJ0fxeILLMLf0dVviaF3SnibxtrFaVO3c8Ria2w/0‘, ‘left‘=>120, ‘top‘=>70, ‘right‘=>0, ‘stream‘=>0, ‘bottom‘=>0, ‘width‘=>55, ‘height‘=>55, ‘opacity‘=>100 ), ), ‘background‘=>‘./font/2018314113148220.png‘, ); //$filename = ‘qrcode/‘.time().‘.jpg‘; //echo createPoster($config,$filename); echo $generate->createPoster($config); }
三、效果：