Since just setting CURLOPT_FOLLOWLOCATION on POSTs doesn't work
because cURL follows with a GET, I thought I'd share the PHP code that
I built yesterday to manually follow 30x's on POSTS (and it does
follows on GETs as well).
function APICall($api_url, $require_credentials = false, $http_post =
false, $username = '', $password = '', $uri = '') {
// $api_url must contain the part of the URL that comes after
http://twitter.com/ and before the ?
// $uri contains the part of the URL that comes after the ? and must
be URL encoded
// eg., page=1&count=100
$remote_server = 'http://twitter.com/';
$call_url = $remote_server . $api_url;
if (!$http_post && !empty($uri)){
$call_url = $call_url . '?' . $uri;
}
$redirect_count = 0;
while (1) {
$cookie = '';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $call_url);
if ($require_credentials) {
curl_setopt($ch, CURLOPT_USERPWD, $username.':'.$password);
}
if ($http_post) {
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $uri);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, FALSE);
} else {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
}
curl_setopt($ch, CURLOPT_USERAGENT, "set your unique user agent
here");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_TIMEOUT, 20);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 1);
curl_setopt($ch, CURLOPT_HEADER, TRUE);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect:'));
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie);
$data = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$headers = substr($data,0,curl_getinfo($ch, CURLINFO_HEADER_SIZE));
$data = substr($data,curl_getinfo($ch, CURLINFO_HEADER_SIZE));
if ($status > 300 && $status < 310) {
preg_match("#Location: ?(.*)#i", $headers, $match);
$redirect_url = trim($match[1]);
if (!empty($redirect_url)){
$redirect_count++;
if ($redirect_count > 20){
// Set $status to something unique here so that you know there was a
loop
curl_close($ch);
break;
}
$call_url = $redirect_url;
$parsed_url = parse_url($call_url);
if (!isset($parsed_url['host'])){
$call_url = $remote_server.$call_url;
}
curl_close($ch);
continue;
}
}
curl_close($ch);
// Check $status for other response codes here
break;
}
return $data;
}
