PHP之 将html源代码生成pdf并下载

代码

SetDefaultMonospacedFont('courier');
        $number="HIECO-MBR-";
        // 设置间距
        $pdf->SetMargins(15, 15, 15);//页面间隔
        $pdf->SetFooterMargin(10);//页脚bottom间隔

    $pdf->setPrintHeader(false);
    $pdf->setPrintFooter(false);

    //设置字体 stsongstdlight支持中文
    $pdf->SetFont('stsongstdlight', '', 14);

    //第一页
    $pdf->AddPage();
    //输出PDF
    if($html!=''){
        $html="
 \n \n    \n        \n            \n        \n      
\n            
采购合同
\n            
   
\n  \n
";
    }
    $pdf->writeHTMLCell(150, 0, 40, 65, $html, 0, 1, 0, true, '', true);
    ob_clean();
    $dir = "/uploads/organization/" . date('Ymd');
    if (!file_exists($dir)) {
        mkdir($dir, 0777, true);  // 如果保存目录不存在就创建新目录
    }
    $filename = $dir .'/'. date('YmdHis') . '.pdf';

    $pdf->Output($_SERVER['DOCUMENT_ROOT'].'/'.$filename, 'F');

    if($is_dowon){
        $this->download_new('/'.$filename,'合同.pdf');
    }else{
        return $filename;
    }

}
public function download_new($url="",$filename='')
{

    if($url ==''){
        $url= request()->get('url');
    }

    if($filename==''){
        $filename= request()->get('filename');
    }

    $info = pathinfo($url);

    if($filename){
        $info['filename']=$filename.'_'.$info['filename'];
    }
    $isurl=0;
    if(!empty($_GET['isurl'])){
        $info['filename']=$filename;
        $isurl=1;
    }

    $this-> download_file( ROOT_PATH.$url,$info['filename'],$isurl);
}
/**
 * 下载文件
 * @param string $file
 *               被下载文件的路径
 * @param string $name
 *               用户看到的文件名
 */
private function download_file($file,$name='',$isurl=0){
    $fileName = $name ? $name : pathinfo($file,PATHINFO_FILENAME);
    $filePath = realpath($file);
    $fp = fopen($filePath,'rb');

    if(!$filePath || !$fp){
        header('HTTP/1.1 404 Not Found');
        echo "Error: 404 Not Found.(server file path error)";
        exit;
    }
    if($isurl==0){
        $fileName = $fileName .'.'. pathinfo($filePath,PATHINFO_EXTENSION);
    }else{
//            $fileName = $fileName.'.xlsx' ;
            $fileName = $fileName .'.'. pathinfo($filePath,PATHINFO_EXTENSION);
        }

    $encoded_filename = urlencode($fileName);
    $encoded_filename = str_replace("+", "%20", $encoded_filename);

    header('HTTP/1.1 200 OK');
    header( "Pragma: public" );
    header( "Expires: 0" );
    header("Content-type: application/octet-stream");
    header("Content-Length: ".filesize($filePath));
    header("Accept-Ranges: bytes");
    header("Accept-Length: ".filesize($filePath));

    $ua = $_SERVER["HTTP_USER_AGENT"];
    if (preg_match("/MSIE/", $ua)) {
        header('Content-Disposition: attachment; filename="' . $encoded_filename . '"');
    } else if (preg_match("/Firefox/", $ua)) {
        header('Content-Disposition: attachment; filename*="utf8\'\'' . $fileName . '"');
    } else {
        header('Content-Disposition: attachment; filename="' . $fileName . '"');
    }

    // ob_end_clean(); <--有些情况可能需要调用此函数
    // 输出文件内容
    fpassthru($fp);
    exit;
}
}