验证电子邮件的格式是否正确

Question

验证电子邮件的格式是否正确 

Answer 1

function checkEmail($email)

  {

    $pregEmail = "/([a-z0-9]*[-_\.]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[\.][a-z]{2,3}([\.][a-z]{2})?/i";

    return preg_match($pregEmail,$email); 

  }