FTP only? No SSH? » Archive you webspace with this script

archiver.php

<?php
// https://www.emvee-solutions.com/blog/create-tar-files-archive-files-server-using-php-script/
try {
  //make sure the script has enough time to run (300 seconds  = 5 minutes)
  ini_set('max_execution_time', '300');
  ini_set('set_time_limit', '0');
 
  $target = isset($_GET["targetname"]) ? $_GET["targetname"] : 'archive.tar'; //default to archive.tar
  $dir = isset($_GET["dir"]) ? $_GET["dir"] : './.'; //defaults to all in current dir
  //setup phar
  $phar = new PharData($target);
  $phar->buildFromDirectory(dirname(__FILE__) . '/'.$dir);
  echo 'Compressing all files done, check your server for the file ' .$target;
} catch (Exception $e) {
  // handle errors
  echo 'An error has occured, details:';
  echo $e->getMessage();
}
?>

How to use

1. Download the script, save it as archiver.php
2. Upload the script to your server
3. Go to yourwebsite.com/achiver.php to call the script

Found on www.emvee-solutions.com