php检查邮件地址是否正确
php检查邮件地址是否正确 [代码片段(22行)]
function checkEmail($email)
{
// Create the syntactical validation regular expression
$regexp = "^([_a-z0-9-]+)(\.[_a-z0-9-]+)*@([a-z0-9-]+)(\.[a-z0-9-]+)*(\.[a-z]{2,4})$";
// Presume that the email is invalid
$valid = 0;
// Validate the syntax
if (eregi($regexp, $email))
{
list($username,$domaintld) = split("@",$email);
// Validate the domain
if (getmxrr($domaintld,$mxrecords))
$valid = 1;
} else {
$valid = 0;
}
return $valid;
}
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