Creating zipped file of many pdfs automatically - php

Question

I am trying to zip a series of pdf files automatically when a page loads. The files are based on a query. I can't seem to figure out the error. All of the pdfs are kept in the agreements folder and I want the zip file to just download on the viewer's computer. The error code that I get is:
agreements/Acadience_Cambridge_Post_1.pdfagreements/DoTheMath_Cambridge.pdfagreements/Edulog_Cambridge.pdfagreements/DESSA_Cambridge.pdfagreements/FuelEducation_Cambridge_signed.pdfagreements/LegendsofLearning_Dedham.pdfagreements/workforce19-22.pdfagreements/Ellevation_Dedham_Posting.pdfagreements/Yabla_Cambridge.pdfagreements/Breakthrough-2020.pdfagreements/Cedar-Labs-DPA.pdfagreements/Tutoring Plus.pdfagreements/Elefante Letrado_Brockton - post.pdfagreements/CollegeBoard_Cambridge_post_1.pdfagreements/LanguageConnections_post.pdfagreements/Flat_Westford - post.pdfagreements/Albert.io_Cambridge_post.pdfagreements/Starfall_Walpole.pdfagreements/Tynker_Milton - post_1.pdfagreements/WeVideo_CambridgeTEC_1.pdfagreements/Checkology_Dedham.pdfagreements/BabylonHouse _Cambridge_signed_4.pdfagreements/FreeMath_Westwood_Post.pdf
Warning: ZipArchive::close(): Failure to create temporary file: Permission denied in /var/www/html/extract_dpas2.php on line 36
Could not find Zip file to download
Here is the code I have:
<?php require_once('Connections/sdpc_i.php'); ?>
<?php
ini_set('display_errors', '1');
ini_set('display_startup_errors', '1');
error_reporting(E_ALL);
$sql = "SELECT * FROM data WHERE districtID = 457 and statusID=1 and signed_agreement_file != 'NULL'";
if ($result=mysqli_query($sdpc_i,$sql))
{
// $rowcount=mysqli_num_rows($result);
// printf("Result set has %d rows.\n",$rowcount);
//define array for storing files
$file = array();
while ($row = mysqli_fetch_assoc($result)) {
//give file name with extension
$name ="agreements/".$row['signed_agreement_file'];
//store file name in array
$file[] = $name;
// store file in one folder named 'files'
file_put_contents($name,$row["signed_agreement_file"]);
}
$zipname = "file.zip";
$zip = new ZipArchive();
$zip_name = time().".zip"; // Zip name
$zip->open($zip_name, ZipArchive::CREATE);
foreach ($file as $f) {
echo $path = "".$f;
if(file_exists($path)){
$zip->addFromString(basename($path), file_get_contents($path));
}
else{
echo"file does not exist";
}
}
$zip->close();
//check zip file create or not and download it
if (file_exists($zipname)) {
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="' . basename($zipname).'"');
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($zipname));
ob_clean();
flush();
readfile($zipname);
exit;
} else {
exit("Could not find Zip file to download");
}
mysqli_free_result($result);
mysqli_close($conn);
}
?>
Thank you in advance for you help.