Simple snippet, used to get the headers from link and his redirects. Requires PHP 5.1.3 and above.

php_get_header.php

<?php

	$url = false;

	if($_POST)
	{
		$url = $_POST['url'];

		stream_context_set_default(array('http' => array('method' => 'HEAD')));
		$headers = get_headers($url, 0);
		$i = 0;
		$result = array();
		foreach($headers as $key => $value)
		{
			if(preg_match('/HTTP\/(?=.*+).*+/', $value, $match) == 1)
			{
				$i++;
			}

			if(preg_match('/(?<=Location:).*+/', $value, $match) == 1)
			{
				$link = trim($match[0]);
				$result[$i][] = "<a href=\"$link\" target=\"_blank\">$link</a>";
				continue;
			}

			$result[$i][] = $value;
		}
	}

?>

	<form method="POST" action="">
		<label for="url">URL</label>
		<input type="text" name="url" <?php echo $url ? "value=\"$url\"":''; ?> />
		<input type="submit" name="submit" value="get the headers" />
	</form>

<?php

	if( $_POST )
	{
		echo "<h3>Headers for: <a href=\"$url\">{$url}</a></h3>";
		echo "<pre>";
		print_r($result);
		echo "</pre>";
	
	}

?>