如果DOM中的名称属性数量未知，如何使用PHP使用FPDF创建新的单元格？

Question

我正在开发一个发票，当用户单击ADD按钮生成一个新字段时，它可以生成新的输入字段。然后，在文档的末尾，我做了一个"GET PDF“按钮，允许您获得发票的PDF副本一旦准备好。为了实现这一点，我一直在使用FPDF库，到目前为止，应用程序运行得非常好，除了一件事。PDF文档基本上必须单独构建，我找不到一种很好的方式让PHP查看我正在构建应用程序的文件，并检索所有值的名称属性，以便将它们注入到我在另一个文件中创建的FPDF模板中。我是PHP新手，我不知道该怎么做。包含发票应用程序的文件称为index.php，包含PDF模板的文件在pdf.php中

in index.php:
<form action="pdf.php" method="post">
 <div class="inputForms">
  <div id="input_fields" class="input_fields_wrap">
    <div class="new"><input  name="description" class="description"       type="text" maxlength="255" placeholder="Enter Description" value=""/>
                    <input  name="r" class="rate qty" type="text"  maxlength="255" placeholder="0" size="5" value=""/>
                    <input  name="p" class="pack price" type="text" maxlength="255" placeholder="$ 0.00" size="5" value=""/>
                    <input id="amount" class="amount" name="amount"   type="text"></div>
</div>
 </div>
</form>

in pdf.php:

<?php

$invoiceNumber = $_POST['InvoiceNumber'];
$clientName = $_POST['clientName'];
$address = $_POST['address'];
$phone = $_POST['phone'];
$insurance_name = $_POST['insurance_name'];
$claim = $_POST['claim'];
$description = $_POST['description'];
$r = $_POST['r'];
$p = $_POST['p'];
$amount = $_POST['amount'];
$totalAmount = $_POST['total_amount'];
$afterTax = $_POST['after_tax'];
$notes = $_POST['notes'];
require("fpdf/fpdf.php");

$pdf = new FPDF();
$pdf->AddPage();
$pdf->SetFont("Arial","",12);

$pdf->Cell(52);
$pdf->Cell(50,10,"The Company Name",1,0,"R");
$pdf->Cell(0,10,"INVOICE",1,1,"C");
$pdf->Cell(52);
$pdf->Cell(50,10,"City, State, Zip",1,0,"R");
$pdf->Cell(30,10,"Date:",1,0,"R");
$pdf->Cell(0,10,"04-15-2016",1,1,"L");
$pdf->Cell(52);
$pdf->Cell(50,10,"Phone: (555)777-7777",1,0,"R");
$pdf->Cell(30,10,"Time:",1,0,"R");
$pdf->Cell(0,10,"15 : 21 PM",1,1,"L");
$pdf->Cell(52);
$pdf->Cell(50,10,"Fax: (555)777-7777",1,0,"R");
$pdf->Cell(30,10,"#",1,0,"R");
$pdf->Cell(0,10,"{$invoiceNumber}",1,1,"L");
$pdf->Cell(52);
$pdf->Cell(0,10,"E-mail: something@example.com",1,1,"L");
$pdf->Image('images/hlogo.jpg',10,6,50);
$pdf->Cell(0,10,"",1,1,"C");
$pdf->Cell(90,10,"Bill To",1,0,"L");
$pdf->Cell(0,10,"Insurance Information",1,1,"L");
$pdf->Cell(90,10,"{$clientName}",1,0,"L");
$pdf->Cell(0,10,"{$insurance_name}",1,1,"L");
$pdf->Cell(90,10,"{$address}",1,0,"L");
$pdf->Cell(0,10,"{$claim}",1,1,"L");
$pdf->Cell(90,10,"{$phone}",1,0,"L");
$pdf->Cell(0,10,"",1,1,"C");
$pdf->Cell(0,10,"",1,1,"C");
$pdf->Cell(100,10,"item",1,0,"L");
$pdf->Cell(25,10,"Quantity",1,0,"C");
$pdf->Cell(25,10,"Rate",1,0,"C");
$pdf->Cell(0,10,"Amount",1,1,"C");

$pdf->Cell(100,10,"{$description}",1,0,"L");
$pdf->Cell(25,10,"{$r}",1,0,"C");
$pdf->Cell(25,10,"$ {$p}",1,0,"L");
$pdf->Cell(0,10,"$ {$amount}",1,1,"L");

$pdf->Cell(0,10,"",1,1,"C");
$pdf->Cell(150,10,"SubTotal",1,0,"R");
$pdf->Cell(0,10,"$ {$totalAmount}",1,1,"L");
$pdf->Cell(150,10,"Tax",1,0,"R");
$pdf->Cell(0,10,"% 6",1,1,"L");
$pdf->Cell(150,10,"Total",1,0,"R");
$pdf->Cell(0,10,"$ {$afterTax}",1,1,"L");
$pdf->Cell(0,10,"",1,1,"C");
$pdf->Cell(0,10,"Notes",1,1,"L");
$pdf->Cell(140,10,"{$notes}",1,1,"L");
$pdf->output();

?>      

Answer 1

我会用"field_01“、"field_02”等模式命名新字段。然后，您可以循环遍历创建的POST字段，如下所示：

foreach ($_POST as $key=>$value){
if (substr($key,0,6) === "field_"){
        $pdf->Cell(140,10,"$value",1,1,"L");
    }
}

Answer 2

这里有一个简单的方法可以做到这一点：

通过使用循环：

备注:，您可以反复执行多次这样的操作，但是您可以像这样使其动态化：

<?php
//Assuming that $data holds all the elements of your specific name attribute
$data = $_POST; 
for ($i=0;$i <= count($data);$i++) {
$pdf->Cell($i); //Here you can do whatever you want with your cell
}
?>

注意: As $_POST包含所有输入字段值，如果您在表单中使用POST方法，那么它将计数所有这些输入字段，然后根据字段的数量创建单元格。