报名表上的“错误”

Question

Hey guys I'm having a bit of a problem not getting my errors to show on my form. This is the code Im running live (just testing it on my hosting site) and it's not showing anything when I put things into the test field. Any idea as to what might be wrong?

<?php

    if ($_POST['submit']) {

      if (!$_POST['email']) $error.="Please enter your email!";
        else if !(filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) $error.="Uh Uh uh, you didn't enter a valid email address!";

    if (!$_POST['password']) $error.="Please enter a password!";
        else {

         if (strlen($_POST['password'])<8) $error.="Please enter a password of at least 8 characters.";
        if (!preg_match('`[A-Z]`',$_POST['password'])) $error.="Please include at least one capital letter in your password."

        }

    if ($error) echo "There were error(s) in your sign up details:".$error;
    }


?>


<form method="post">

    <input type ="email" name="email" id="email" />

    <input type ="password" name="password" />

    <input type ="submit" name="submit" value ="Click for Cookies" />

</form>

Answer 1

I'm going to echo what @Casmir said in the comments about using isset, but have you tried submitting something incorrect and then simply viewed the page source? When you do, is the text there?

If it isn't then your test conditionals and possible the conditional looking for an error are incorrect, try using isset on the $error variable as well.

One more thing, you said this is on a hosting site, make sure you have display_error set to On via a local php.ini file (or however your hoster supports custom PHP config values) to make sure there aren't code errors preventing the execution from completing either which would be hidden via 'production level' settings (Also remove them when finished testing of course!).

Answer 2

您的条件不正确，因为您正在检查！$ _ POST [email] ，因为每当您需要检查is_empty（$ _ POST [email]）时 ，您都会得到它，如果是，则可以回显“不允许为空”或其他内容（如果不为空），则可以放置正则表达式来检查有效的电子邮件ID。