这个展示了用php绘制宣传海报的方法，组成部分有微信的头像昵称，带参数的二维码，将这些信息绘制在一张图片上面
获取微信头像保存
// $url 远程图片路径
// $save_dir 保存图片路径
// $filename 文件名
// $type 获取远程图片的方法
public function getImage($url,$save_dir='',$filename='',$type=0){
if(trim($url)==''){
return array('file_name'=>'','save_path'=>'','error'=>1);
}
if(trim($save_dir)==''){
$save_dir='./';
}
if(trim($filename)==''){//保存文件名
$ext=strrchr($url,'.');
if($ext!='.gif'&&$ext!='.jpg'){
return array('file_name'=>'','save_path'=>'','error'=>3);
}
$filename=time().$ext;
}
if(0!==strrpos($save_dir,'/')){
$save_dir.='/';
}
//创建保存目录
if(!file_exists($save_dir)&&!mkdir($save_dir,0777,true)){
return array('file_name'=>'','save_path'=>'','error'=>5);
}
//获取远程文件所采用的方法
if($type){
$ch=curl_init();
$timeout=5;
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
$img=curl_exec($ch);
curl_close($ch);
}else{
ob_start();
readfile($url);
$img=ob_get_contents();
ob_end_clean();
}
//文件大小
$fp2=@fopen($save_dir.$filename,'a');
fwrite($fp2,$img);
fclose($fp2);
unset($img,$url);
return array('file_name'=>$filename,'save_path'=>$save_dir.$filename,'error'=>0);
}
绘制二维码
use phpqrcode\QRcode;
public function qrcode($url,$imagename){
$mk = date("Y-m-d");
$path = "qrcode/".$mk."/".$imagename.".jpg";
if(!file_exists('./qrcode/'.$mk.'/')){
mkdir('qrcode/'.$mk.'/',0777,true);
}
$level=3;
$size=5;
$errorCorrectionLevel =intval($level);
$matrixPointSize = intval($size);
QRcode::png($url, $path, $errorCorrectionLevel, $matrixPointSize, 2);
$img_url = $path;
return $img_url;
}
生成图片的参数 图片样式摆放
public function configs($nickname,$avatar_url,$qrCode,$background,$left,$top){
$config = array(
'text'=>array(
array(
'text'=>$nickname,
'left'=>182,
'top'=>100,
'fontPath'=>'qrcode/simhei.ttf', //字体文件
'fontSize'=>36, //字号
'fontColor'=>'255,255,255', //字体颜色
'angle'=>0,
),
array(
'text'=>'标题',
'left'=>182,
'top'=>160,
'fontPath'=>'qrcode/simhei.ttf', //字体文件
'fontSize'=>24, //字号
'fontColor'=>'255,255,255', //字体颜色
'angle'=>0,
)
),
'image'=>array(
array(
'url'=>$qrCode, //图片资源路径
'stream'=>0,
'left'=>$left,
'top'=>$top,
'right'=>0,
'bottom'=>0,
'width'=>190,
'height'=>190,
'opacity'=>100
),
array(
'url'=>$avatar_url,
'left'=>40,
'top'=>50,
'right'=>0,
'stream'=>0,
'bottom'=>0,
'width'=>120,
'height'=>120,
'opacity'=>100
),
),
'background'=>$background,
);
return $config;
}
生成宣传海报方法
public function createPoster($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,$filename); //保存到本地
imagedestroy($imageRes);
if(!$res) return false;
return $filename;
}else{
imagejpeg ($imageRes); //在浏览器上显示
imagedestroy($imageRes);
}
}
调用
$url = 'url';
$imagename = '图片名字';
//生成二维码返回路径
$qrcode = $this->qrcode($url,$imagename);
//生成图片的参数
$nickname = '昵称';
$avatar_url = '头像';
$value['background'] = '背景图';
$value['left'] = '左边距';
$value['top'] = '上边距';
$config = $this->configs($nickname,$avatar_url,$qrcode,$value['background'],$value['left'],$value['top']);
$filename = $qrcode;
//生成海报返回路径
$urls = $this->createPoster($config,$filename);
绘制二维码的方法
二维码生成方法采用phpqrcode插件 ，采用命名空间设计在extend建立phpqrcode文件夹，下面在建立QRcode.php
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