function checkUrl($url) {
$root = _getRoot($url);
$ctx = stream_context_create(array(
'http' => array(
'max_redirects' => 5, // allows 4 redirects :/
'timeout' => 5,
)
));
$fp = @fopen($url, 'r', false, $ctx);
$ret['success'] = false;
if (! $fp) {
return $ret;
}
$ret['locations'] = array();
$ret['metaData'] = stream_get_meta_data($fp);
fclose($fp);
// analyze HTTP headers
foreach ($ret['metaData']['wrapper_data'] as $line) {
if (preg_match('@^Location: (.*)$@i', $line, $m)) {
if ($m[1][0] === '/') {
// root-relative URI
$m[1] = $root . $m[1];
} elseif (strpos($m[1], '://') >= 4) {
// full URL
$root = _getRoot($m[1]);
}
$ret['locations'][] = $m[1];
}
if (preg_match('@^HTTP/1\.[01] 200@i', $line, $m)) {
$ret['success'] = true;
}
}
return $ret;
}
function _getRoot($url) {
list($proto, $url) = explode('://', $url, 2);
list($host) = explode('/', $url, 2);
return $proto . '://' . $host;
}
var_export(checkUrl('http://microsoft.com/ie'));
// outputs
array (
'success' => true,
'locations' =>
array (
0 => 'http://www.microsoft.com/ie',
1 => 'http://www.microsoft.com/ie/',
2 => 'http://www.microsoft.com/windows/internet-explorer/default.aspx',
),
'metaData' =>
array (
'wrapper_data' =>
array (
... abunch of HTTP headers
),
'wrapper_type' => 'http',
'stream_type' => 'tcp_socket/ssl',
'mode' => 'r+',
'unread_bytes' => 3478,
'seekable' => false,
'uri' => 'http://microsoft.com/ie',
'timed_out' => false,
'blocked' => true,
'eof' => false,
),
)
Check these out
http://hungred.com/how-to/php-check-remote-email-url-image-link-exist/
http://w-shadow.com/blog/2007/08/02/how-to-check-if-page-exists-with-curl/
