php验证邮箱格式

1. if(isset($_POST['email'])){
2. $email = $_POST['email'];
3. if(filter_var($email, FILTER_VALIDATE_EMAIL)){
4. echo '

   This is a valid email.

   ';

5. }else{
6. echo '

   This is an invalid email.

   ';
7. }
8. }
9. ?>
10. Email:

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