使用 mPDF 生成并保存多个 pdf 文件

Question

我有一个使用 mPDF 库生成单个 PDF 文件的代码。但是当我尝试一次生成 2 个 pdf 并尝试下载这些文件时，它不会生成第二个文件。

代码如下：

function download($id)
    {
        $this->load->library('m_pdf');

        // download annexC form
        $this->annexc($id);

        // download resident form
        $this->resident($id);
    }

function annexc($id)
    {
        $data1['udata'] = $this->general_model->getUserDetail($id);
        // mprd($data);
        $name1 = str_replace(' ', "-", strtolower($data1['name']));
        $time1 = time();
        $file_name1 = $name1.$time1.$id.'-Annexc-Form';
        $html1 = $this->load->view('annexc/form_download', $data1, true);
        $pdfFilePath1 = SAVE_PDF_ANNEXC.$file_name1.".pdf";
        $this->m_pdf->pdf->SetDisplayMode('fullpage');
        $this->m_pdf->pdf->WriteHTML($html1);
        $this->m_pdf->pdf->Output(SAVE_PDF_ANNEXC.$file_name1.".pdf", "F");
    }

    function resident($id)
    {
        $data['udata'] = $this->general_model->getUserDetail($id);
        $name = str_replace(' ', "-", strtolower($data['name']));
        $time = time();
        $file_name = $name.$time.$id.'-Residential-Form';
        $html = $this->load->view('resident/form_download', $data, true);
        $file_name = trim($file_name);
        $pdfFilePath = SAVE_PDF_RESIDENT.$file_name.".pdf";
        $this->m_pdf->pdf->SetDisplayMode('fullpage');
        $this->m_pdf->pdf->defaultfooterfontstyle='';
        $this->m_pdf->pdf->defaultfooterfontsize=12;
        $this->m_pdf->pdf->defaultfooterline=0;
        $this->m_pdf->pdf->setFooter('{PAGENO}');
        $this->m_pdf->pdf->WriteHTML($html);
        $this->m_pdf->pdf->Output($pdfFilePath, "F");
    }

当我调用 download() 时，它将成功创建 annexc pdf，但对于第二个 resident()，它将创建具有与 annexc 表单相同数据的 pdf。为什么这样？我应该做哪些更改？

Answer 1

您正在调用相同的模型函数

$data['udata'] = $this->general_model->getUserDetail($id);

然后用不同的名称回显相同的结果

$html1 = $this->load->view('annexc/form_download', $data1, true);
$html = $this->load->view('resident/form_download', $data, true);

即使视图的样式不同，您也会得到相同的结果。

Answer 2

谷歌搜索后的答案如下：

取消设置旧的 HTML 和 mpdf 对象并创建新对象。

function download($id)
    {
        $data['udata'] = $this->general_model->getUserDetail($id);
        $time = time();
        ini_set('memory_limit','256M');
        $file_name_res = $time.$id.'-resident-form';
        $html = $this->load->view('resident/form_download', $data, true);
        $pdfFilePathRes = PDF_FILES.$file_name_res.".pdf";
        $this->load->library('m_pdf');
        $mpdf = new mPDF();
        $mpdf->SetDisplayMode('fullpage');
        $mpdf->defaultfooterfontstyle='';
        $mpdf->defaultfooterfontsize=12;
        $mpdf->defaultfooterline=0;
        $mpdf->setFooter('{PAGENO}');

        $mpdf->WriteHTML($html);
        $mpdf->Output($pdfFilePathRes, "F");

        unset($mpdf); // this is the magic
        unset($html); // this is the magic

        ini_set('memory_limit','256M');
        $file_name = $time.$id.'-annexc-form';
        $html = $this->load->view('annexc/form_download', $data, true);
        $pdfFilePath = PDF_FILES.$file_name.".pdf";
        $this->load->library('m_pdf');
        $mpdf = new mPDF();
        $mpdf->SetDisplayMode('fullpage');
        $mpdf->WriteHTML($html);
        $mpdf->Output($pdfFilePath, "F");        
    }

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