I have a problem that I install 'Archive_Zip 0.1.1' on Linux server, but when I try to run the script to create the zip file it gives the fatal error "Fatal error: Class 'ZipArchive' not found in ---" where I put the code

$zip = new ZipArchive;
var_dump($zip);
$res = $zip->open($filename, ZipArchive::OVERWRITE);
if($res !== TRUE){
    echo 'Error: Unable to create zip file';
    exit;
}
if(is_file($src)){
    $zip->addFile($src);
}else{
    //echo "<br>".dirname(__FILE__).$src;//'/install1';
    if(!is_dir($src)){
         $zip->close();
         @unlink($filename);
         echo 'Error: File not found';
         exit;
    }
    recurse_zip($src,$zip,$path_length);
}
$zip->close();
echo "<br>file name ".$filename;

ancak sınıf dosyası bulunamadı.

Please tell me the solution what should I do to resolve the problem. I also put php.ini file to the folder where script is, but it does not work.