php - 如何在 FPDF 中使用循环外的变量

Question

我正在使用 FPDF 生成 PDF 文档，当我单击表中一行上的发送按钮时，我想为该记录生成 PDF 并将其发送到记录电子邮件。 PDF 正常生成，但我想使用每个记录的变量“电子邮件”发送到该记录..但是在 $to 上，我无法使用数据库中的电子邮件变量。

我尝试了所有的组合，但我肯定错过了一些东西。 $idx 是上一页 (Index.php) 中的 ID，将数据发布到生成 PDF 的“mail.php”。

<!-- Index.php -->
                <a class = "btn btn-info pid"                                       
                href = "mailto.php?idx=<?php echo $f_staff['id']?>" data-toggle="tooltip" title="Email This">
                <span class="glyphicon glyphicon-envelope"></span>                  
                </a>

                <!-- mailto.php -->
                <?php
                require('../fpdf/fpdf.php');
                $db = new PDO('mysql:host=localhost;dbname=mcle','root','PASS'); 

                // CREATE AND SAVE THE PDF DOCUMENT
                class pdf extends FPDF
                {

                        function header()
                        {
                            Bla Bla Bla Bla.!
                        }
                        function viewTable($db)
                        {
                            $this->SetFont('Times','',12);
                            $idx = $_GET['idx'];
                            $stmt = $db->query("SELECT
                                                staff.id,
                                                staff.fname,
                                                staff.lname, 
                                                staff.staff_bar_no, 
                                                staff.email
                                                FROM staff JOIN attendance ON staff.staff_bar_no = attendance.staff_bar_no
                                                WHERE attendance.event_id = 13 AND staff.id = '$idx'");

                            while($data = $stmt->fetch(PDO::FETCH_OBJ))
                            {
                                (This part WORKS fine with $data->Somevariables...
                                $this->Cell(80,6,$data->fname." ".$data->lname ,0,0,'L');
                                Bla Bla Bla Bla.!
                                }
                        }

                }       
                $pdf = new pdf();
                $pdf->AddPage('P','A4',0);
                $pdf->view_pre_Table($db);
                $pdf->viewTable($db);

                // email stuff (change data below)
                This is where I wanted to use Email Variable from the Array above... Tried $data->email; didn't work
                $to = "email@email.net";
                Bla Bla Bla Bla.!
                // send message
                mail($to, $subject, $body, $headers);
                ?>

while 循环之外的变量被视为未识别!

Answer 1

我没有保存在 php 中，这样的东西可以工作:

            <!-- mailto.php -->
        <?php
        require('../fpdf/fpdf.php');
        $db = new PDO('mysql:host=localhost;dbname=mcle','root','PASS'); 

        // CREATE AND SAVE THE PDF DOCUMENT
        class pdf extends FPDF
        {
                //declare empty array 
                public $datas = [];

                function header()
                {
                    Bla Bla Bla Bla.!
                }
                function viewTable($db)
                {
                    $this->SetFont('Times','',12);
                    $idx = $_GET['idx'];
                    $stmt = $db->query("SELECT
                                        staff.id,
                                        staff.fname,
                                        staff.lname, 
                                        staff.staff_bar_no, 
                                        staff.email
                                        FROM staff JOIN attendance ON staff.staff_bar_no = attendance.staff_bar_no
                                        WHERE attendance.event_id = 13 AND staff.id = '$idx'");

                    while($data = $stmt->fetch(PDO::FETCH_OBJ))
                    {
                     array_push(this->datas,$data); //push each data into array
                        (This part WORKS fine with $data->Somevariables...
                        $this->Cell(80,6,$data->fname." ".$data->lname ,0,0,'L');
                        Bla Bla Bla Bla.!
                        }
                }

        }       
        $pdf = new pdf();
        $pdf->AddPage('P','A4',0);
        $pdf->view_pre_Table($db);
        $pdf->viewTable($db);

        // email stuff (change data below)
        // now you can iterate over $pdf->datas 

        // send message
        mail($to, $subject, $body, $headers);
        ?>