Show Output
<!DOCTYPE html> <html lang="en"> <head> <title>Validate an IP Address in PHP</title> </head> <body> <?php // Sample IP address $ip = "172.16.254.1"; // Validate sample IP address if(filter_var($ip, FILTER_VALIDATE_IP)){ echo "The <b>$ip</b> is a valid IP address"; } else { echo "The <b>$ip</b> is not a valid IP address"; } ?> </body> </html>
