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Ultimate Guestbook Tutorial: How to build a Guestbook with a honeypot, error checking, IP banning, pagination, e-mail notification and smilies with PHP and mySQL
April 26, 2008,
47,482 views
In this section we will show the errors on the screen, if there are any. We will use the include method like we did to include the form.php into the skin.php file. So to do so open up your skin.php file and do:
Before:
<tr>
<td valign="top"><?php include('form.php');?></td>
</tr>
Add:
<?php
if(isset($error)){
?>
<tr>
<td valign="top">
<?php
foreach($error as $value){
echo $value.'<br />';
}
?>
</td>
</tr>
<tr>
<td height="10"></td>
</tr>
<?php
}
?>
This will show the errors straight away. But it didn’t look too good. So i added another class to my CSS document:
.errors {
border: #999999 solid 1px;
color: #222222;
background: #ffe958;
font-size: 14px;
padding: 10px;
}
That’s better! Now let me explain what’s going on here.
2: Checks to see if the $error variable is set, in other words, it checks to see if there were any errors or any fields that weren’t submitted. If there are errors then it progresses.
6: This line runs through the $error array (which was from the index.php page, remember all these pages that have been included can be thought of as one page or one file, romantic i know). It grabs the values which are accessible via $value. All we do here is simply print them to screen with a trailing line break.
That’s about it. The rest is just to make it sit right on the page and make it look pürdy.
Next up we need to insert some records into the database!
Posted by VoiDeT –
60 Comments
Hello VOIDET
I spent last night going through this tutorial and it was great and informative.
One question I have is that I see your guestbook example has had some spambot action. Is this because there are new techniques that your tutorial doesn’t cover? I’d like to keep this kind of crap off my guest book if possible.
Thanks for your great tutorial and your feedback.
Best,
CGar
Hey Cgar,
This is both true and unfortunate.
I only taught one spam catching technique.
However more can be applied if need be. Generating a captcha form, or having an ip-ban with 30 day cool off period. Running known ip blocking from black lists.
The honey pot technique is just one! Surprisingly, it rejects quite alot!
Let me know if i can help you out further!
VoiDeT
Hi there,
A great tut! Im trying to put it on my site.
But there is one little problem. The honeypot.. when is add this link:
a new text field appears on my guestbook, while you where saying that it was hidden?
How is that possible?
Dennis
Hi there. Thanks for the great tut. Sorry…forgot to read the last side, as I didn’t used all of the tut for my guestbook at the moment. So I implemented the guestbook in my website without asking you first. And…I’m not completly ready, still working on some things as the honeypot and the pagination.
Hello VOIDET,
This is the best tutorial on the internet so far!
I’m stuck at stage 7 – 10,
it looked fine until stage 7 then the succes-message never showed up.
The IP thing didin’t work for me :/ so I jumped that part and now I’m trying to get the entries to work out, but it show me this message:
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in C:\xampp\htdocs\guestbook\templates\entries.php on line 6
do you have a idea of what’s wrong?
I would be happy for any help, just contact my email!
Regards Zime
@Zime:
Thanks a lot for the kind words.
That’s a shame that you can’t get the guestbook working. It looks as though your data isn’t being insert correctly. What you can do however is check your database for any records. If they aren’t in there then check what’s going on with data you’re inserting, and the insert commands.
If you do see the data in there, then check what’s happening when you try and retrieve the records.
I’m thinking i might rewrite this tutorial to use OOP with PHP5.
Or maybe save that for a whole new tutorial.
Hi
First great thanks to the author of this tutorial/workshop
Its working great. But there is only a single problem with the website links in the db entrys they re not working.
The link includes the hole file path i.e.(http://htdocs/mywebsite/www.pcsh.it) whats wrong?
thx in advance and best regards
Oli
THX a lot
love this tut
hey, where can i find the turtorial?
greetings
Dude, many thanks for this nice and clean tutorial. Took me about an hour to read it all up and add own commands.