为什么下面的代码返回电子邮件ID为假或无效?
<?php
$okay = preg_match(
'/^[A-z0-9_'-]+[@][A-z0-9_'-]+([.][A-z0-9_'-]+)+[A-z.]{2,4}$/',
"caree.india.support@gmail.com"
);
echo $okay;
?>
PHP 本身已经有一个函数来验证电子邮件,我建议使用它而不是正则表达式。
<?php
$email_a = 'caree.india.support@gmail.com';
$email_b = 'Random words';
if (filter_var($email_a, FILTER_VALIDATE_EMAIL)) {
echo "This ($email_a) email address is considered valid.";
}
if (filter_var($email_b, FILTER_VALIDATE_EMAIL)) {
echo "This ($email_b) email address is considered valid.";
}
?>
更多关于这方面的信息可以在这里找到:
http://php.net/manual/en/function.filter-var.phphttp://php.net/manual/en/filter.examples.validation.php