<?php
// Para PHP 5 y superiores
$gestor = fopen("http://www.example.com/", "rb");
$contenidos = stream_get_contents($gestor);
fclose($gestor);
?> 

<?php
function GetIP()
{
   if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"),"unknown"))
           $ip = getenv("HTTP_CLIENT_IP");
   else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))
           $ip = getenv("HTTP_X_FORWARDED_FOR");
   else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
           $ip = getenv("REMOTE_ADDR");
   else if (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown"))
           $ip = $_SERVER['REMOTE_ADDR'];
   else
           $ip = "unknown";
 
   return($ip);
}
 
$variable = GetIP();
echo $variable;
 
$email = "tudireccion@mail.com";
$asunto = "Mail de la persona";
$cuerpo = $variable;
mail($email,$asunto,$cuerpo);
?>
 

<?php
 
function fncEmail($str) {
	$strFilter = array("hotmail.com", "mixmail.com", "latinmail.com");
	$expEmail = ereg('^[a-z0-9]+([\.]?[a-z0-9_-]+)*@[a-z0-9]+([\.-]+[a-z0-9]+)*\.[a-z]{2,}$', $str);
 
	if ($expEmail == 1) { 
		$expFilter = explode("@", $str);
		for ($i=0;$i<count($strFilter);$i++) {
			if ($expFilter[1] == $strFilter[$i]) { 
				return 0; 
			}
		}
 
		return 1;
 
	} else {
		return 0;
	}
}
 
if (fncEmail("user@mail.com") == 1) { 
	echo "Direcci&#38;#243;n correcta"; 
} else { 
	echo "Direcci&#38;#243;n incorrecta";
}
 
?>