Evtl. nur die Funktionen:
http://www.php.net/manual/de/ref.zip.php
Probiers mal so.PHP-Code:
/* austauschen nach bedarf */
$zip = zip_open('./crons/ip-to-country.csv.zip');
$entry = zip_read($zip);
zip_entry_open($zip, $entry, "r");
$fd = fopen('./crons/'.zip_entry_name($entry), 'w+');
fwrite($fd, zip_entry_read($entry, zip_entry_filesize($entry)));
fclose($fd);
zip_entry_close($entry);
zip_close($zip);
/* austauschen nach bedarf */
Kill one man, and you are a murderer.
Kill millions of men, and you are a conqueror.
Kill them all, and you are a god. - Jean Rostand, Thoughts of a Biologist (1939)