| while ($awake){ code(); } Name: Eric Location: Kentucky Join Date: Mar 2005
Posts: 4,116
NP$: 259.00 ( Donate)
| Check if a URL exists.
Howdy.
This simple function will check if a url is valid (going by parse_url()) and if it's 'online' - by seeing if it returns a 302, 301, or 200 status code.
EDIT: 3/4/2008, updated to more efficient. PHP Code: <?php
function is_valid_url($url)
{
$url = @parse_url($url);
if (!$url)
{
return false;
}
$url = array_map('trim', $url);
$url['port'] = (!isset($url['port'])) ? 80 : (int)$url['port'];
$path = (isset($url['path'])) ? $url['path'] : '/';
$path .= (isset($url['query'])) ? "?$url[query]" : '';
if (isset($url['host']) AND $url['host'] != gethostbyname($url['host']))
{
if (PHP_VERSION >= 5)
{
$headers = implode('', get_headers("$url[scheme]://$url[host]:$url[port]$path"));
}
else
{
$fp = fsockopen($url['host'], $url['port'], $errno, $errstr, 30);
if (!$fp)
{
return false;
}
fputs($fp, "HEAD $path HTTP/1.1\r\nHost: $url[host]\r\n\r\n");
$headers = fread($fp, 4096);
fclose($fp);
}
return (bool)preg_match('#^HTTP/.*\s+[(200|301|302)]+\s#i', $headers);
}
return false;
}
?>
|
