PHP Curl following redirects

Question

I\'m trying to be a bit sneeky and as part of a learning process try and improve my page scraping skills.

One thing i\'ve come across that I have yet to be able to s

Answer 1

http.//php.net/manual/en/ref.curl.php

   function get_final_url( $url, $timeout = 5 )
 {
    $url = str_replace( "&", "&", urldecode(trim($url)) );

   $cookie = tempnam ("/tmp", "CURLCOOKIE");
$ch = curl_init();
curl_setopt( $ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20041001 Firefox/0.10.1" );
curl_setopt( $ch, CURLOPT_URL, $url );
curl_setopt( $ch, CURLOPT_COOKIEJAR, $cookie );
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
curl_setopt( $ch, CURLOPT_ENCODING, "" );
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
curl_setopt( $ch, CURLOPT_AUTOREFERER, true );
curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, $timeout );
curl_setopt( $ch, CURLOPT_TIMEOUT, $timeout );
curl_setopt( $ch, CURLOPT_MAXREDIRS, 10 );
$content = curl_exec( $ch );
$response = curl_getinfo( $ch );
curl_close ( $ch );

if ($response['http_code'] == 301 || $response['http_code'] == 302)
{
    ini_set("user_agent", "Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20041001 Firefox/0.10.1");
    $headers = get_headers($response['url']);

    $location = "";
    foreach( $headers as $value )
    {
        if ( substr( strtolower($value), 0, 9 ) == "location:" )
            return get_final_url( trim( substr( $value, 9, strlen($value) ) ) );
    }
}

if (    preg_match("/window\.location\.replace\('(.*)'\)/i", $content, $value) ||
        preg_match("/window\.location\=\"(.*)\"/i", $content, $value)
)
{
    return get_final_url ( $value[1] );
}
else
{
    return $response['url'];
   }
}