代码如下:
if(IS_POST){
print_r($_POST);
$email = I('post.email','','email');
echo "I function res:" .$email. "\n";
$email2 = $_POST['email'];
$t = filter_var($email2,FILTER_VALIDATE_EMAIL);
echo "filter_var funtion:" . $t . "\n";
}


Array ( [email] => 192 ) I function res:192 filter_var funtion:

为什么i方法没有过滤掉
如果把 $email = I('post.email','','email');
改成 $email = I('post.email','',FILTER_VALIDATE_EMAIL);
无论post.email为何值都输出为空