它说我有很多语法错误，我不知道如何修复它[关闭]

Question

(DOCTYPE html) into main ()

"Validate Local Address"
Validate Local Address
 int ($email as $emailAddress);{
    echo "The email address “".$emailAddress.
         "” ";
         if (preg_match("/^((A-Za-z)\d+)".
           "(A-Za-z)+\(A-Za-z)".
           "@((mail\.))example\.org$/i",
           $emailAddress)==3)
     echo " Is a valid e-mail address.";
   else
       echo " is not a valid e-mail address.";    
         }   
      ?>

我一直在尝试运行这段代码，但它说我有很多错误和很多语法问题。我应该创建一个脚本，该脚本使用正则表达式来验证我使用的任何电子邮件是否有效。我会很感激任何帮助。