extract a remote zip file with php

[fluid]

Hi I am trying to grab a remote zip file then extract it but it is trying to extract it before it has trasnfered so I end up with a complete zip file but an xml file of 0 bytes. The code I have is:


// read the file
$image = file_get_contents("http://www.examplesite.com/zip");
// write the file
file_put_contents("zips/filename.zip", $image);
// extract the file
$zip = zip_open("zips/filename.zip");
if ($zip) {
while ($zip_entry = zip_read($zip)) {
$fp = fopen("zips/".zip_entry_name($zip_entry), "w");
if (zip_entry_open($zip, $zip_entry, "r")) {
$buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
fwrite($fp,"$buf");
zip_entry_close($zip_entry);
fclose($fp);
}
}
zip_close($zip);
}



Many thanks for any help.