Validate Email Address
This is a very simple function that can be used to validate eMail addresses. The function verifies whether a given eMail address matches a regular expression that eMail addresses should conform and validate the eMail address host.
Source code:
<?
function check_email($email){
if(@ereg("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$", $email)){
$url = substr(strrchr($email, "@"), 1);
if (strstr($url, "/")) {
$url = explode("/", $url, 2);
$url[1] = "/".$url[1];
} else {
$url = array($url, "/");
}
$fh = @fsockopen($url[0], 80);
if ($fh) {
@fputs($fh,"GET ".$url[1]." HTTP/1.1\nHost:".$url[0]."\n\n");
if (@fread($fh, 22) == "HTTP/1.1 404 Not Found") { return FALSE; }
else { return TRUE; }
} else { return FALSE;}
}else{
return FALSE;
}
}
?>
Tags: check email, email, email validator
