Comprobar si una IP es válida desde PHP
Cuando nos encontramos programando servicios webs y similares, muchas veces nos surge la necesidad de comprobar el formato de una dirección IP.
Para poder realizar esta tarea os dejamos esta pequeña función en PHP que comprueba que una IP es válida, para ello devolvera TRUE o FALSE en función de la validez.
function IsIPValid($ip){ if (preg_match('/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/', $ip)){ return true; } return false; }
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