DaniWeb IT Discussion Community - New to php and need some help with a guestbook

Here is the scripts so you do not need to download them

Main PHP page which is linked to in my site

[PHP]<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">

<head>
<title>DaveClissold.com - Changing my life one day at a time</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta name="keywords" content="" />
<meta name="author" content="Will Rossiter" />
<style type="text/css" media="screen">
@import url(../images/styles.css);
.style18 {color: #CCCCCC; font-size: 12px; font-family: Verdana; }
.style19 {color: #FFFFFF}
.style20 {font-family: Verdana}
.style21 {color: #FF0000}
</style>
</head>

<body>
<script type="text/javascript" src="http://www.ritecounter.com/c/52/51905.js"></script><noscript><div><a href="http://logodesign.ritecounter.com"><img src="http://www.ritecounter.com/scripts/htmlc.php?id=51905" alt="Online Logo Design" style="border:0 hidden"/></a></div></noscript>
<div id="container">

<div id="leftcol">

<h1><img src="/images/davelogo12.jpg" alt="" width="200" height="80" /></h1>
<p class="sub">Changing my life one day at a time <a href="http://www.willr.co.nz"></a></p>

<h3>Navigation</h3>
<ul>
<li><a href="/index.html"><span class="style18"><img src="/images/bullet.jpg" alt="bullet" width="11" height="11" /></span> Home</a></li>
<li><a href="/diary/diarymain.html"><span class="style19"><img src="/images/bullet.jpg" alt="bullet" width="11" height="11" /></span> Diary</a></li>
<li><a href="/recipes.html"><span class="style19"><img src="/images/bullet.jpg" alt="bullet" width="11" height="11" /></span> Recipes</a></li>
<li><a href="/photos.html"><span class="style19"><img src="/images/bullet.jpg" alt="bullet" width="11" height="11" /></span> Photos</a></li>
<li><a href="/links.html"><span class="style19"><img src="/images/bullet.jpg" alt="bullet" width="11" height="11" /></span> Links</a></li>
<li><a href="mailto:dave@daveclissold.com"><span class="style19"><img src="/images/bullet.jpg" alt="bullet" width="11" height="11" /></span> Contact</a></li>
</ul>
</div>

<div id="rightcol">

<div align="left">







</div>
<p align="left">
<h4 align="left"><strong>%Name%</strong> email:<a href="mailto:%email%?body=Please remove the _nospam_ in the email" class="content">%email% wrote on %entrydate%</h4>
</p>
<p align="left">%message%</p>
<p align="left">

<div align="left"><br />

</div>
<div align="right">
<p>

<h2 class="style18"><a href="../backurl" class="content">< previous </a>
<a href="../nexturl" class="content">next ></a></h2>
<h2 class="style18"><a href="..//board/easyboard.php?action=sign" class="content">Sign Guestbook</a></h2></p>



</div>
<div class="warning">
<p class="style21">Please do NOT spam this guestbook, thank you!</p>
</div>
<br />
<div align="right">
<p><h2 class="style18"><a href="..//board/easyboard.php?action=view" class="content">View Guestbook</a></h2></p>
</div>





<div class="warning">
<p>Sorry you forgot to enter the following fields:

Please re-enter them.</p>
</div>
<p><br />




</p>
<div class="warning">
<p>The email you entered was not valid</p>
</div>
<p><br />




</p>
<div class="thanks">
<p>Thank you for your support in my quest for completing this challenge and turning my life around.</p>
</div>
<br />
<div><h2 class="style18" align="right"><a href="..//board/easyboard.php?action=view" class="content">View Guestbook</a></h2></div>





<form method="post">
<table border="0">
<tr>
<td class="content" width="10%"><p>Name:*</p></td>
<td><input type="text" name="Name" size="20" class="input" value="%Name%" /></td>
</tr>
<tr>
<td class="content" width="10%"><p>Email:*</p></td>
<td><input type="text" name="email" size="20" class="input" value="%email%" /></td>
</tr>
<tr>
<td class="content" width="10%"><p>Website</p></td>
<td><input type="text" name="url" size="20" class="input" value="%url%" /></td>
</tr>
<tr>
<td class="content" colspan="2"><p>Your Message:*</p></td>
</tr>
<tr>
<td colspan="2"><textarea name="message" cols="40" rows="5" class="input" >%message%</textarea></td>
</tr>
<tr>
<td colspan="2" align="center">

<input type="submit" value="Add to Guestbook"/></td>
</tr>
</table>
</form>
<br />
<div align="right">
<p><h2 class="style18"><a href="..//board/easyboard.php?action=view" class="content style19 style20">View Guestbook</a></h2></p>
</div>




<div class="gbhead"><br />
<p><h4><strong>%Name%</strong> email:<a href="mailto:%email%?body=Please remove the _nospam_ in the email" class="content">%email% wrote on %entrydate%</h4>
</p>
<p>%message%
</p>
<p></div>
<br />

<div align="right">
<p>

<h2 class="style18"><a href="../backurl" class="content">< previous </a>
<a href="../nexturl" class="content">next ></a></h2>
<h2 class="style18"><a href="..//board/easyboard.php?action=sign" class="content">Sign Guestbook</a></h2></p>
</div>


<p align="right"> Copyright © 2007, Dave Clissold. All rights reserved</p>
</div></div>


<script type="text/javascript">

</script>
<script type="text/javascript" src="http://www.statsrely.com//js.php?usr=891">
</script>
<noscript>
<a href="http://www.statsrely.com/" target="_blank">
<img src="http://www.statsrely.com/newdesign/stat.php?usr=891&offset=8&interval=24&cntimg=100" title="Stats Rely Free Hit Counter!"></a>
</noscript>

</body>
</html>[/PHP]

This is the php script that I downloaded as part of the zip file

[PHP]<?php
/*
Easyboard Version 3.4
written by Christian Heilmann
Homepage:http://www.onlinetools.org/

Do not change any code here, the whole functionality is triggered by
comments in the HTML Template!
requires entries.xml and guestbook_template.html to work.
*/

$action=$_GET['action'];
if ($_POST['action']!="") {$action=$_POST['action'];}
$start=$_GET['start'];
$action=strip_tags($action);
$start=strip_tags($start);

$HTML=load("easyboard_template.html");

preg_match("//",$HTML,$dateformat);
if($dateformat[1]==""){$dateformat = "M d Y H:i:s";}
else {$dateformat = $dateformat[1];}

if ($action==''){
echo displaysetup("invalidemail,forgottenfields,thanks,form,display,spam");
}

if ($action=="view"){
$gb=load("easyboard_entries.xml");
if (untag($gb,"entry",1)!=""){
$HTML=displaysetup("invalidemail,forgottenfields,thanks,form,hello,spam");
preg_match_all("/(.*?)/si",$HTML,$item);
$entries=array_reverse(untag($gb,"entry",1));
preg_match_all("/%(.*?)%/",$item[1][0],$vars);
preg_match("//si",$HTML,$inc);
if ($inc[1]==""){$increase=sizeof($entries);}
else{$increase=$inc[1];}
if(!$start){$start=0;}
$end=$start+$increase;
if ($start >= $increase){
preg_match_all("/(.*?)/si",$HTML,$back);
$back=$back[1][0];
$back=preg_replace("/backurl/",$PHP_SELF."?action=view&start=".($start-$increase),$back);
$HTML=preg_replace("/(.*?)/si",$back,$HTML);
}
else {$HTML=preg_replace("/(.*?)/si","",$HTML);}
if ($end < sizeof($entries)){
preg_match_all("/(.*?)/si",$HTML,$back);
$back=$back[1][0];
$back=preg_replace("/nexturl/si",$PHP_SELF."?action=view&start=".($start+$increase),$back);
$HTML=preg_replace("/(.*?)/si",$back,$HTML);
}
else {$HTML=preg_replace("/(.*?)/si","",$HTML);}
$disp=array_slice($entries,$start,$increase);
$htmlinclude="";
foreach ($disp as $e){
$ditem=$item[1][0];
foreach ($vars[1] as $v){
$con=untag($e,$v,0);
$ditem=preg_replace("/%".$v."%/si",stripslashes(nl2br(htmlentities($con))),$ditem);
}
if (preg_match("//si",$HTML)){$ditem=preg_replace("/@/si","@_nospam_",$ditem);}
$htmlinclude.= $ditem;
}
$HTML=preg_replace("/.*?/si",$htmlinclude,$HTML);
}
else {
$HTML=displaysetup("invalidemail,forgottenfields,thanks,form,display,spam");
}
echo $HTML;
}
if ($action=="sign"){
$HTML=displaysetup("invalidemail,forgottenfields,thanks,display,hello,spam");
$HTML=preg_replace("/%.*%/","",$HTML);
echo $HTML;
}
if ($action=="verify"){
$keys=array_keys($_POST);
for ($i=0;$i<count($_POST);$i++){
$HTML=preg_replace("/%".$keys[$i]."%/si",stripslashes($_POST[$keys[$i]]),$HTML);
}
$req=explode(",",$_POST['required']);
foreach ($req as $r){
if ($_POST[$r]==""){
$errorfields[]=$r;
}
}
/*

ZZZzz |\ _,,,---,,_
Sometimes when I look at the z /,`.-'`' -. ;-;;,_.
amount of work on my schedule zz|,4- ) )-,_. ,\ ( `'-'
I wish that I was born a cat '---''(_/--' `-'\_)
*/

$HTML=displaysetup("display,hello");
if ($errorfields[0]!=""){
$inc="<ul>";
foreach ($errorfields as $e){$inc.="<li>$e</li>";}
$inc.="</ul>";
$HTML=preg_replace("//si",$inc,$HTML);
$HTML=displaysetup("spam,thanks");
}
else {$HTML=displaysetup("forgottenfields");}
if (checkmail($_POST['email'])){$HTML=displaysetup("invalidemail");}
if (checkmail($_POST['email']) and $errorfields[0]==""){
$gb=load("easyboard_entries.xml");
$id=count(untag($gb,"entry",1));
$allentries=untag($gb,"entry",1);
if ($id==1 and $allentries[0]==""){$id=1;}
else {$id++;}
$data="\n<entry>";
$data.="\n\t<entryid>$id</entryid>";
$data.="\n\t<entrydate>".date ($dateformat)."</entrydate>";
$mail.="New Entry id:$id\nDate:".date ($dateformat)."\n";
$keys=array_keys($_POST);
for ($i=0;$i<count($_POST);$i++){
if ($keys[$i]!="required" and $keys[$i]!="action"){
$data.="\n\t<".$keys[$i].">".stripslashes($_POST[$keys[$i]])."</".$keys[$i].">";
$mail.="\n".$keys[$i].":".stripslashes($_POST[$keys[$i]]);
}
}
$data.="\n</entry>";
$preg="/\s|<entry>|<\/entry>|<entryid>.*?<\/entryid>|<entrydate>.*?<\/entrydate>/si";
if(preg_replace($preg,"",$data) == preg_replace($preg,"",$allentries[count($allentries)-1])){$HTML=displaysetup("thanks,form");}
else{save ("easyboard_entries.xml",preg_replace("/<\/guestbook>/","".$data."\n</guestbook>",$gb));
$HTML=displaysetup("spam,form");
if (preg_match("//si",$HTML)){
preg_match_all("//si",$HTML,$owner);
$mailheaders = "From: Easyboard\n";
$mailheaders .= "Reply-To: $email\n";
mail ($owner[1][0],"New entry in the Guestbook!",$mail,$mailheaders);
}
}
}
if (!checkmail($_POST['email'])){$HTML=displaysetup("spam,thanks");}
echo preg_replace("//","",$HTML);
}

function displaysetup($fields){
global $HTML;
$fields=explode(",",$fields);
foreach ($fields as $f){
$HTML=preg_replace("/.*?/si","",$HTML);
}
return $HTML;
}

/*
Function urlize($name)
checks if the submitted string is a valid email and returns a boolean
*/
function checkmail($string){
global $HTML;
if (preg_match("//",$HTML)){return true;}
return preg_match("/^[^\s()<>@,;:\"\/\[\]?=]+@\w[\w-]*(\.\w[\w-]*)*\.[a-z]{2,}$/i",$string);
}

/*
Function urlize($name)
converts an item name into a url na,e
*/
function urlize($name){
return strtolower(preg_replace("/[^\w\.]/","",$name));
}

/*
Function load($file)
reads the content of the file that you send and returns it
*/
function load($filelocation){
if (file_exists($filelocation)){
$newfile = fopen($filelocation,"r");
$file_content = fread($newfile, filesize($filelocation));
fclose($newfile);
return $file_content;
}
}

/*
Function save($file,$content)
writes the content to the file and generates it if needed
*/
function save($filelocation,$newdatas){
$newfile = @fopen($filelocation,"w+");
@fwrite($newfile, $newdatas);
@fclose($newfile);
if($newfile!=""){$fileerror=0;}
else {$fileerror=1;}
return $fileerror;
}

/*
Function untag($string,$tag,mode){
written by Chris Heilmann (info@_nospam_onlinetools.org)
filters the content of tag $tag from $string
when mode is 1 the content gets returned as an array
otherwise as a string
*/
function untag($string,$tag,$mode){
$tmpval="";
$preg="/<".$tag.">(.*?)<\/".$tag.">/si";
preg_match_all($preg,$string,$tags);
foreach ($tags[1] as $tmpcont){
if ($mode==1){$tmpval[]=$tmpcont;}
else {$tmpval.=$tmpcont;}
}
return $tmpval;
}

?>[/PHP]

Here is the admin php script

[PHP]
<?
/*
Admin for Easyboard
written by Christian Heilmann
*/
$action=$_GET['action'];
$id=$_GET['id'];
$action=strip_tags($action);
$id=strip_tags($id);
$self=$HTTP_SERVER_VARS["PHP_SELF"];
$data=load("easyboard_entries.xml");
$entries=untag($data,"entry",1);
if ($_POST['edited']=="change"){
$gb="<?xml version=\"1.0\"?>\n";
$gb.="\n\t<guestbook>";
$id=$_POST['entryid'];
if($entries[0]!=''){foreach ($entries as $k=>$e){
if (untag($e,"entryid",0)!=$id){
$gb.="\n\t<entry>";
$gb.=$e;
$gb.="\n\t</entry>";
}
else {
$gb.="\n\t<entry>";
$keys=array_keys($_POST);
for ($i=0;$i<count($_POST);$i++){
if ($keys[$i]!="edited"){
$gb.= "\n\t<".$keys[$i].'>'.$_POST[$keys[$i]].'</'.$keys[$i].'>';
}
}
$gb.="\n\t</entry>";
}
}}
$gb.="\n\t</guestbook>";
$data=save("easyboard_entries.xml",$gb);
$self=explode("/",$self);
header("Location:".$self[count($self)-1]);
}
if ($action=="del"){
$gb="<?xml version=\"1.0\"?>\n";
$gb.="\n\t<guestbook>";
$k=0;
if($entries[0]!=''){foreach ($entries as $e){
if (untag($e,"entryid",0)!=$id){
$k++;
$gb.="\n\t<entry>";
$gb.=rtrim(preg_replace("/<entryid>.*?<\/entryid>/","<entryid>$k</entryid>",$e));
$gb.="\n\t\t</entry>";
}
}}
$gb.="\n\t</guestbook>";
$data=save("easyboard_entries.xml",$gb);
$self=explode("/",$self);
header("Location:".$self[count($self)-1]);
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Easyboard admin</title>
<style type="text/css">
body {
background:#cccccc;
font-family:verdana,sans serif;
font-size:1em;
color:#333333;
font-weight:bold;
}
td {
font-weight:bold;
background:#eeeeee;
color:#333333;
padding:5px;
font-family:verdana,sans serif;
font-size:x-small;
}
.entry {
font-weight:normal;
background:#eeeeee;
color:#333333;
padding:5px;
border-top:none;
border-left:1px solid #333333;
border-right:1px solid #333333;
border-bottom:1px solid #333333;
font-family:verdana,sans serif;
font-size:x-small;
}
.del {
background:#eeeeff;
padding:5px;
border-top:1px solid #333333;
border-left:1px solid #333333;
border-right:1px solid #333333;
border-bottom:1px solid #333333;
font-family:verdana,sans serif;
font-size:x-small;
}
a{
font-family:verdana,sans serif;
font-size:x-small;
color:#336699;
text-decoration:none;
}
</style>
</head>

<body>
<?php
if (!$action or $action!="del" and $action!="edit"){
echo "<html><head><meta http-equiv=\"expires\" content=\"Fri, 5 Apr 1996 23:59:59 GMT\"></head><body>This is the admin part of easyboard, simply click the delete links to delete or edit to edit the entry.<br><br>";
if($entries[0]!=''){foreach ($entries as $e){
echo "<div class=\"del\"><a href=\"$self?action=del&id=".untag($e,"entryid",0)."\">delete</a>|<a href=\"$self?action=edit&id=".untag($e,"entryid",0)."\">edit</a></div>";
echo "<div class=\"entry\">";
preg_match_all("/<(.*?)>(.*?)<\/.*?>/si",$e,$item);
foreach ($item[1] as $f=>$i){
if ($i != "entryid"){echo "<strong>".$item[1][$f]."</strong>: ".nl2br($item[2][$f])."<br>";}
}
echo "</div><br>";
}}
}
if ($action=="edit"){
if($entries[0]!=''){foreach ($entries as $k=>$e){
if (untag($e,"entryid",0)==$id){
echo '<form method="post" action="'.$self.'">';
echo '<input name="entryid" type="hidden" value="'.untag($e,"entryid",0).'">';
echo '<input name="entrydate" type="hidden" value="'.untag($e,"entrydate",0).'">';
echo '<table border="0"><tr><td colspan="2">Please edit the entry:</td></tr>';
preg_match_all("/<(.*?)>(.*?)<\/.*?>/si",$e,$item);
foreach ($item[1] as $f=>$i){
if ($i != "entryid" and $i!="entrydate"){
echo '<tr>';
echo '<td valign="top">'.$item[1][$f].'</td><td>';
if (strlen($item[2][$f]) < 50){
echo '<input type="text" name="'.$item[1][$f].'" value="'.$item[2][$f].'">';
}
else {
echo '<textarea cols="60" rows="6" name="'.$item[1][$f].'">'.$item[2][$f].'</textarea>';
}
echo '</td></tr>';
}
}
echo '<tr><td colspan="2" align="right"><input type="submit" value="change" name="edited">';
echo '</td></tr></table>';
echo '</form>';
}
}}
}

/*
Function load($file)
reads the content of the file that you send and returns it
*/
function load($filelocation){
if (file_exists($filelocation)){
$newfile = fopen($filelocation,"r");
$file_content = fread($newfile, filesize($filelocation));
fclose($newfile);
return $file_content;
}
}

/*
Function save($file,$content)
writes the content to the file and generates it if needed
*/
function save($filelocation,$newdatas){
$newfile = @fopen($filelocation,"w+");
@fwrite($newfile, $newdatas);
@fclose($newfile);
if($newfile!=""){$fileerror=0;}
else {$fileerror=1;}
return $fileerror;
}

/*
Function untag($string,$tag,mode){
written by Chris Heilmann (info@_nospam_onlinetools.org)
filters the content of tag $tag from $string
when mode is 1 the content gets returned as an array
otherwise as a string
*/
function untag($string,$tag,$mode){
$tmpval="";
$preg="/<".$tag.">(.*?)<\/".$tag.">/si";
preg_match_all($preg,$string,$tags);
foreach ($tags[1] as $tmpcont){
if ($mode==1){$tmpval[]=$tmpcont;}
else {$tmpval.=$tmpcont;}
}
return $tmpval;
}

?>
</body>
</html>
[/PHP]

I know its a lot but its I'm probably missing out on something very basic which not knowing PHP I will pick up on very quickly.

Thanks in advance for your help.