PHP生成PDF文件

吾生也有涯，而知也无涯~欢迎优化补充、指正！

近期有需求是:前端签名后结合平台协议生成签名文件

本例实现方法为:借助canvas生成签名图片,然后贴至协议底部保存为pdf文档

(本例在TP6环境下)借助tcpDF实现  官方提供多个例子点击查看

第一步: 引入组件

composer

composer require tecnickcom/tcpdf

或GitHub直接下载导入

GitHub - tecnickcom/TCPDF: Official clone of PHP library to generate PDF documents and barcodes
放置于vendor下

    public function saveSign(int $sign_id=0, int $accordId=10007)    {        if(!$sign_id){            return ;        }        $signUrl = (new UploadFile())->find($sign_id);//获取签名图片路径        if(empty($signUrl) || empty($signUrl->preview_url)){            return ;        }        $signUrl = $signUrl->preview_url;        if(!file_exists('pdf')){            mkdir('pdf');        }        if(file_exists('pdf/'.$sign_id.'.pdf')){            return ;        }        $pdf = new \TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true,'UTF-8', false);        $pdf->setCreator(PDF_CREATOR);        $pdf->setAuthor('Nicola Asuni');        $pdf->setTitle('TCPDF Example 002');        $pdf->setSubject('TCPDF Tutorial');        $pdf->setKeywords('TCPDF, PDF, example, test, guide');        $pdf->setPrintHeader(false);        $pdf->setPrintFooter(false);        $pdf->setDefaultMonospacedFont(PDF_FONT_MONOSPACED);        $pdf->setMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);        $pdf->setAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);        $pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);        // droidsansfallback 中文字符 需额外引用放至vendor/tecnickcom/tcpdf/fonts        $pdf->setFont('droidsansfallback', '', 14);        $pdf->AddPage();        $center = (new Help()) -> find($accordId); // 协议内容        $txt = <<contentEOD;        $pdf->writeHTMLCell(0, 0, '', '', $txt, 0, 1, 0, true, '', true);        $pdf->Image($signUrl, '', '', 35, 20, '', '', 'B', false, 300, 'R', false, false, 1, false, false, false);        $pdf->writeHTMLCell(0, 0, '', '', date('Y年m月d日'), 0, 1, 0, true, 'R', true);        ob_clean(); // 可不加        $pdf->Output($_SERVER['DOCUMENT_ROOT'].'pdf/'.$sign_id.'.pdf', 'F');    }

效果如下

注: 需引入droidsansfallback解决中文乱码问题 

来源地址：https://blog.csdn.net/Error_Q/article/details/127046850