how can I download multiple PDF files using php - php

Question

so I am making a web site that allows user to read from a xlsx file sheet and download all the data each in a separate pdf here is the code
<?php
ini_set('error_reporting', E_ALL);
ini_set('display_errors', true);
// Load Composer's autoloader
require 'vendor/autoload.php';
$file_name="";
//index.php
$message = '';
require_once __DIR__.'/../src/SimpleXLSX.php';
echo '<h1>XLSX to HTML</h1>';
if (isset($_FILES['file'])) {
if ( $xlsx = SimpleXLSX::parse( $_FILES['file']['tmp_name'] ) ) {
$filen=$_FILES['file']['tmp_name'];
echo '<h2>'.$xlsx->sheetName($_POST['sh']-1).'</h2>';
echo '<table border=1>';
$dim = $xlsx->dimension();
$num_cols = $dim[0];
$num_rows = $dim[1];
foreach ( $xlsx->rows($_POST['sh']-1) as $k => $r ) {
// if ($k == 0) continue; // skip first row
echo '<tr>';
if ($k == 0) echo '<td>' .$r[ 0 ]. '</td>';
else
echo '<td>' .substr_replace($r[ 0 ],"",strripos($r[ 0 ]," ")). '</td>';
echo '<td>' .$r[ 1 ]. '</td>';
echo '<td>' .$r[ 2 ]. '</td>';
echo '<td>' .$r[ 4 ]. '</td>';
echo'<td>' . $r[ 5 ]. '</td>';
echo'<td>' . $r[ 7 ]. '</td>';
echo'<td>' .$r[ 8 ] . '</td>';
echo '</tr>';
if ($k != 0) // skip first row
{$date = substr_replace($r[0], "", strripos($r[0], " "));
$factname = $r[1];
$name = $r[2];
$email = $r[4];
$phone = $r[5];
$post = $r[7];
$pack = $r[8];
echo $name;
if ($pack == '90') $garanti = '30 jours';
else if ($pack == '190') $garanti = '6 mois';
else if ($pack == '290') $garanti = '12 mois';
else if ($pack == '390') $garanti = '2 ans';
else if ($pack == '490') $garanti = '3 ans';
else if ($pack == '590') $garanti = '5 ans';
sendmail();
echo'<td>telecharger</td>';}
// echo "telecharger";
}
echo '</table>';
echo '</tr>';
}
echo '</table>';
}
else {
echo SimpleXLSX::parseError();
}
if(isset($_POST['charge'])) {
if (isset($_FILES['file'])) {
if ($xlsx = SimpleXLSX::parse($_FILES['file']['tmp_name'])) {
foreach ($xlsx->rows($_POST['sh']-1) as $k => $r) {
if ($k == 0) continue; // skip first row
$date = substr_replace($r[0], "", strripos($r[0], " "));
$factname = $r[1];
$name = $r[2];
$email = $r[4];
$phone = $r[5];
$post = $r[7];
$pack = $r[8];
if ($pack == '90') $garanti = '30 jours';
else if ($pack == '190') $garanti = '6 mois';
else if ($pack == '290') $garanti = '12 mois';
else if ($pack == '390') $garanti = '2 ans';
else if ($pack == '490') $garanti = '3 ans';
else if ($pack == '590') $garanti = '5 ans';
sendmail();
echo "telecharger";
}
}
echo "telecharger";
}
}
echo '<h2>Upload form</h2>
<form method="post" enctype="multipart/form-data">
*.XLSX <input type="file" name="file" />
<input placeholder="sheet number" name="sh" type="number" required>
<input type="submit" value="Parse" />
</form>';
function sendmail()
{
global $name;
global $file_name;
$file_name="";
echo $file_name;
include('pdf.php');
$pdf = new Pdf();
$file_name = "ORDER-".$name . '.pdf';
$html_code = '<link rel="stylesheet" href="bootstrap.min.css">';
$html_code .= fetch_customer_data();
$pdf->load_html($html_code);
$pdf->render();
$file = $pdf->output();
file_put_contents($file_name, $file);
// $pdf->stream($file_name) ->
}
and this is the pdf.php file
<?php
//pdf.php
require_once 'dompdf/autoload.inc.php';
use Dompdf\Dompdf;
class Pdf extends Dompdf{
public function __construct(){
parent::__construct();
}
}
?>
I want to download all the pdfs at the same time but it only downloads the first one and shows me this error
( ! ) Fatal error: Cannot declare class Pdf, because the name is already in use in C:\wamp64\www\vucrm\xl\simplexlsx-master\examples\pdf.php on line 0
I tried to add exit() at the end of sendmail function but this only download the first and shows no other data or errors
can anyone help thanks in advance

Answer 1

You need to use require_once at the top of your script, don't use include inside the function.
// Require this at the top of your file
require_once('pdf.php');
The issue is each time you call the function, it includes the PDF class again and it can only be declared once.

Answer 2

Downloadable PDF files in html link!
To Download PDF from HTML link using PHP with the help of header() function in php.
The header() function is used to send a raw HTTP header.
Sometimes it wants the user to be prompted to save the data such as generated PDF.
Syntax:
http response headers to download any application
header("Content-Type: application/octet-stream");
http response headers to set composition and file to download
header('Content-Disposition: attachment; filename="downloaded.pdf"');
The length of the requested file need to download
header("Content-Length: " . filesize("download.pdf"));
Reads a file and writes it to the output buffer.
readfile('original.pdf');
PHP codes
$file = $_GET["file"] .".pdf";
// We will be outputting a PDF
header('Content-Type: application/pdf');
// It will be called downloaded.pdf
header('Content-Disposition: attachment; filename="gfgpdf.pdf"');
$imagpdf = file_put_contents($image, file_get_contents($file));
echo $imagepdf;
HTML codes
<!DOCTYPE html>
<html>
<head>
<title>Download PDF using PHP from HTML Link</title>
</head>
<body>
<center>
<h2 style="color:green;">Welcome To GFG</h2>
<p><b>Click below to download PDF</b>
</p>
Download PDF Now</center>
</body>
</html>
Note: Remember that HTTP header() must be called before any actual output is sent, either by normal HTML tags, blank lines in a file or from PHP.
Example 1: Save below HTML file as htmllinkpdf.html and save PHP file as downloadpdf.php
Above example to illustrate concept of downloading PDF file using HTML link.
Downloading file appears to be PDF format but without any content which shows error on opening in any application.
See more here
Here is another simple solution in for loop