<?php
$zip = new ZipArchive();
$filename = "zip/test.zip";

if ($zip->open($filename, ZipArchive::CREATE)!==TRUE) {
    exit("cannot open <$filename>\n");
}
$zip->addFile("../../img/bannerpagina.jpg","/bannerpagina.jpg");
$zip->addFile("../../img/logopdf.png","/logopdf.png");
echo "numficheros: " . $zip->numFiles . "\n";
echo "estado:" . $zip->status . "\n";
$zip->close();

?>