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Answer 1

+2 A:

Slightly different

if (preg_match ('/^[\w.-]+@[\w.-]+\.[A-Za-z]{2,6}$/', $_POST['email'])) { 
    $email = mysqli_real_escape_string($mysqli, strip_tags($_POST['email'])); 
} else { 
    $error = 'Please enter a valid email address!'; 
}

Now you can print your $error anywhere on your page

Okay, make it this:

if (preg_match ('/^[\w.-]+@[\w.-]+\.[A-Za-z]{2,6}$/', $_POST['email'])) { 
    $email = mysqli_real_escape_string($mysqli, strip_tags($_POST['email'])); 
    echo "valid ";
} else { 
    $error = 'Please enter a valid email address!'; 
    echo "invalid ";
} 
echo $error;
exit;

What would it say now?

Another example:

<?php
$error="";
if (preg_match ('/^[\w.-]+@[\w.-]+\.[A-Za-z]{2,6}$/', $_POST['email'])) { 
  $email = mysqli_real_escape_string($mysqli, strip_tags($_POST['email'])); 
} else { 
  $error = 'Please enter a valid email address!'; 
  $email=htmlspecialchars($email);
} 
?>
<html>
<form>
<?php if ($error): ?>
  <p class="error"><?php echo $error?></p>
<?php endif ?>
Enter email: <input type="text" name="email" value="<?php echo $email?>">
<input type="submit">
</form>
</html>

Now it works?

Col. Shrapnel 2010-03-25 06:27:07

This did not work at all why?

GeNx 2010-03-25 06:31:05

@GeNx: Then you just `echo $error;` wherever you want it to appear on your page. Did you do that?

animuson 2010-03-25 06:35:37

@animuson of course I did that I'm not that much of a newbie :) I actually tried that before I posted this question.

GeNx 2010-03-25 06:39:04

@GeNx may be you just entered valid email? or you trying to print it on some other page? or just before validation?

Col. Shrapnel 2010-03-25 06:43:52

@Col. Shrapnel, No I left out the @ sign so I know its not valid.

GeNx 2010-03-25 06:48:19

@GeNx **never** say "I know" but only "I have checked". Did you check what branch of your condition has worked? buy putting `echo "valid";` and `echo "invalid";` in the corresponding statements?

Col. Shrapnel 2010-03-25 06:52:28

@Col. Shrapnel I didn't know I was in grammar school. And you lost me :(

GeNx 2010-03-25 06:57:06

It's not grammar, it's common sense really. Are you trying to echo the variable in a function somewhere or is it in a function where it would not be accessible elsewhere?

animuson 2010-03-25 07:08:37

@GeNx see addon to my post

Col. Shrapnel 2010-03-25 07:09:47

@Col. Shrapnel, No I disagree with you and your common sense which is a little wacky:) As for your add on I get the following error. `valid Undefined variable: error`

GeNx 2010-03-25 07:15:24

@GeNx so, you can disagree with me, but your code says your email passed validation and there is no error to show

Col. Shrapnel 2010-03-25 07:32:12

@Col. Shrapnel, But I still can't place it any where on the web page :( Thanks though.

GeNx 2010-03-25 07:36:43

@GeNx OMG **you can**! You can print any variable in any place! You just have to define it first! Thanks though.

Col. Shrapnel 2010-03-25 07:47:40

@Col. Shrapnel OMG it wont work though when its directly in my HTML.

GeNx 2010-03-25 07:53:02

@GeNx PHP can be used anywhere in HTML as long as it belongs to the same PHP script. Learn `<?php` tag

Col. Shrapnel 2010-03-25 08:11:22

@Col. Shrapnel, HUH I did that but it did not work, hence the question:)

GeNx 2010-03-25 08:24:11

@GeNx another edit

Col. Shrapnel 2010-03-25 11:35:17

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PHP form validation question?

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