Miscellany

/*
Shorten posts
*/

function short ( $text, $ending, $fchar, $echar ) {

	$text = (strlen ($text) > $echar) ? trim(substr( $text, $fchar, $echar )) . $ending : $text . $ending;
	$text = clean( $text );
	return $text;

}

/*
Get the users real ip
*/

function get_real_ip()
{
	$ip = FALSE;
	 
	if( !empty( $_SERVER['HTTP_CLIENT_IP'] ) ) $ip = $_SERVER['HTTP_CLIENT_IP'];

	if( !empty($_SERVER['HTTP_X_FORWARDED_FOR'] ) )
	{
		$ips = explode( ", ", $_SERVER['HTTP_X_FORWARDED_FOR'] );
		if( $ip )
		{
			array_unshift( $ips, $ip );
			$ip = FALSE;
		}

		for( $i = 0; $i < count( $ips ); $i++ )
		{
			if( !preg_match( "/^(10|172\.16|192\.168)\./i", $ips[$i] ) )
			{
				if( version_compare(phpversion(), "5.0.0", ">=" ) )
				{

					if( ip2long( $ips[$i] ) != FALSE )
					{
						$ip = $ips[$i];
						break;
					}
				}
				else
				{
					if( ip2long( $ips[$i] ) != - 1 )
					{
						$ip = $ips[$i];
						break;
					}
				}
			}
		}
	}
	return ( $ip ? $ip : $_SERVER['REMOTE_ADDR'] );
}

/*
Clean strings
*/

function clean($string)
{
	if(get_magic_quotes_gpc())
	{
		$string = stripslashes($string);
	}
	elseif(!get_magic_quotes_gpc())
	{
		$string = addslashes(trim($string));
	}

	$string = escapeshellcmd($string);
	$string = strip_tags($string);
	$string = htmlspecialchars($string);
	$string = ereg_replace("[^A-Za-z0-9/-/_/+]", "", $string );
	
	return $string;
}