<?php
mail('ejemplo@hotmail.com', 'prueba', 'hola');
?> 
 

$cabeceras    = "De: \"$nombre_\" $correo_\r\n";
$cabeceras   .= "Return-Path: \"$nombre_\" <$correo_>\r\n";
$cabeceras   .= "X-Mailer: PHP / ".phpversion()."\r\n";
 

//-------------------------------------------------------------------------------------------------------------------------+
// Here emerge the two types of globals vars, copy all incoming POST and GET variables to an associative array called $var |
//-------------------------------------------------------------------------------------------------------------------------+	
if(!isset($var) || !is_array($var)) {
		$var = array();
		$var = array_merge($_POST, $_GET); // GET overwrites POST
	}
 
// With this function, we are clear the html chars to entity ascii
function clear_chars($var){
		if(!is_array($var)){
			return htmlspecialchars($var);
				}
		else{
			$new_var = array();
			foreach ($var as $j => $p){
				$new_var[htmlspecialchars($j)]=clear_chars($p);
				return $new_var;
			}
		}
	}
	if($_POST) $_POST=clear_chars($_POST);
	if($_GET) $_GET=clear_chars($_GET);
	if($_REQUEST) $_REQUEST=clear_chars($_REQUEST);
	if($_SERVER) $_SERVER=clear_chars($_SERVER);
	if($_COOKIE) $_COOKIE=clear_chars($_COOKIE);