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<?php
class Validate {
// Email validation credit: http://www.linuxjournal.com/article/9585
public static function email($email) {
$isValid = true;
$atIndex = strrpos($email, "@");
if (is_bool($atIndex) && !$atIndex) {
$isValid = false;
} else {
$domain = substr($email, $atIndex+1);
$local = substr($email, 0, $atIndex);
$localLen = strlen($local);
$domainLen = strlen($domain);
if ($localLen < 1 || $localLen > 64) {
// local part length exceeded
$isValid = false;
} else if ($domainLen < 1 || $domainLen > 255) {
// domain part length exceeded
$isValid = false;
} else if ($local[0] == '.' || $local[$localLen-1] == '.') {
// local part starts or ends with '.'
$isValid = false;
} else if (preg_match('/\\.\\./', $local)) {
// local part has two consecutive dots
$isValid = false;
} else if (!preg_match('/^[A-Za-z0-9\\-\\.]+$/', $domain)) {
// character not valid in domain part
$isValid = false;
} else if (preg_match('/\\.\\./', $domain)) {
// domain part has two consecutive dots
$isValid = false;
} else if (!preg_match('/^(\\\\.|[A-Za-z0-9!#%&`_=\\/$\'*+?^{}|~.-])+$/', str_replace("\\\\","",$local))) {
// character not valid in local part unless
// local part is quoted
if (!preg_match('/^"(\\\\"|[^"])+"$/', str_replace("\\\\","",$local))) {
$isValid = false;
}
}
// Checking DNS to make sure the domain is real is total overkill
global $conf;
if ($conf['check_email_dns'] && $isValid && !(checkdnsrr($domain,"MX") || checkdnsrr($domain,"A"))) {
// domain not found in DNS
$isValid = false;
}
}
return $isValid;
}
public static function username($name) {
return preg_match('/^[a-zA-Z0-9. _-]{2,}$/', $name);
}
}
?>
|
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