public static function setup()
{
if (defined(ZIP_MODULE_IMPLEMENTATION_PATH)) {
$possible_zip_locations = explode(":", ZIP_MODULE_IMPLEMENTATION_PATH);
//try to find zip executable
foreach ($possible_zip_locations as $loc) {
if (is_executable($loc . DIRECTORY_SEPARATOR . "zip")) {
self::$zip_exec = $loc . DIRECTORY_SEPARATOR . "zip";
} else {
if (is_executable($loc . DIRECTORY_SEPARATOR . "unzip")) {
self::$unzip_exec = $loc . DIRECTORY_SEPARATOR . "unzip";
}
}
}
}
}