PHP Forum

**Physicsguy** · 04:47 PM

I don't know what they're called, but here's an example:

http://www.example.com/page.php?whatever=something

The bold stuff. Now I have a script that is on a page with the URL as:

http://www.pgreviews.com/userreview.php?reviewID=2

(don't go there, it's not fully functionable yet

)

And on that page, I have a script that sets ?comments to "on".
So the whole URL should be:

http://www.pgreviews.com/userreview....=2&comments=on

Right?

It doesn't work for me.

It just takes me back to userreview.php?comments=on.

How can I get it so that it adds it to the one already there, keeping reviewID as whatever it is?

Thanks!

**NullPointer** · 11-13-2009, 05:10 PM

Its called URL parameters.

I'm not quite understanding what the problem is. Is your script redirecting to userreview.php?comments=on? Posting your code would probably make it easier to see what you are doing wrong.

**Physicsguy** · 05:28 PM

I can't really post the code, since it's all over the place and between two pages.

I'll try to give it a 'story' feel to it.

1. You go to userreview.php.
2. You click a button so the URL changes to userreview.php?comments=on
3. Now Comments are displaying.
4. Now you click a button to go to reviewID=2. reviewID is the ID of the review, it takes you to a unique page.
5. Now, you're at userreview.php?reviewID=2. But wait, didn't I say to keep the comments on? They're not there any more.
6. You'll turn them back on. You click the button.
7. Now you're back at userreview.php?comments=on. But I want to look at reviewID=2 and comments=on at the same time! I want the URL to be userreview.php?reviewID=2&comments=on!

I hope that helps. Now you could just type that in, and it would work, but many people out there don't know PHP (

) so they can't do that. So I made buttons that when you click them, it does it for you. But it can only have one URL parameter in the URL at a time.

**NullPointer** · 06:49 PM

Once comments is set to on, use a session variable to determine whether or not comments are displayed:

PHP Code:


			
session_start();



if($_GET['comments'] == 'on')

     $_SESSION['comments'] = 1;

else if($_GET['comments'] == 'off')

     $_SESSION['comments'] = 0;

//if $_GET['comments'] isn't set leave the previous value



if($_SESSION['comments'] == 1)

{

     //display comments

}

**Physicsguy** · 11-14-2009, 09:09 AM

Thank you so much! This works like a dream! I'll post back if I get any bugs or questions, thank you!

**Sir P** · 11-14-2009, 10:29 AM

Build your apps with cakephp , a php framework.. it takes care of all that for you and speeds up development time massively

**Physicsguy** · 11-14-2009, 04:29 PM

I get this error with NullPointer's code:

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/pgreviews/web/userreview.php:9) in /home/pgreviews/web/userreview.php on line 181

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/pgreviews/web/userreview.php:9) in /home/pgreviews/web/userreview.php on line 181

IDK, When I take out the session start line, it works, no errors, but it doesn't remember comments are on.

**NullPointer** · 11-14-2009, 04:49 PM

You cannot send any headers before calling session_start(). That means you can't have any output or calls to header() prior to calling session_start().

**Physicsguy** · 11-14-2009, 07:10 PM

Here's the full code to my page:

PHP Code:


			
<?php include "pgcdconfig.php"; ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Physicsguy's Reviews - User Review</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta name="author" content="Scott Kaye" />
<meta name="description" content="PGReviews - User review.  This is a review submitted by one of our users." />
<meta name="keywords" content="Review, reviews, user, pgcd, pg, pgcreatedata, " />
<link rel="stylesheet" href="physicsguystyle2.css" type="text/css" media="screen" />
<link rel="stylesheet" href="pgcdstyle.css" type="text/css" media="screen" />
<link rel="alternate stylesheet" type="text/css" media="screen" title="lavatheme" href="physicsguystyle.css" />
<link rel="alternate stylesheet" type="text/css" media="screen" title="rocktheme" href="physicsguystyle3.css" />
<link rel="alternate stylesheet" type="text/css" media="screen" title="darkmattertheme" href="physicsguystyle4.css" />
<link rel="shortcut icon" href="images/favicon.ico" type="image/x-icon" />
<link rel="icon" href="images/favicon.ico" type="image/x-icons" />
<meta name="viewport" content="initial-scale = 1.0" />
<script type="text/javascript" src="getscreen.js"></script>
<!--This script should appear below your LINK stylesheet tags -->

<script src="styleswitch.js" type="text/javascript">
/***********************************************
* Style Sheet Switcher v1.1- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for this script and 100s more
***********************************************/
</script>
</head>
<body>
<div id="container"><div id="banner">
<div id="brb" >
<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />
<script type="text/javascript">

function showbox()
{
    document.getElementById("togglebox").style.display="block";
}
function hidebox()
{
    document.getElementById("togglebox").style.display="none";
}
</script>

<div id="togglebox" onclick="showbox()">
<div class="contentboxtitle">
<form action="" method="get">
<table><tr><td><input name="reviewID" title="Enter a Review ID in this box to go straight to that review!" />&nbsp;<input type="submit" value="Go" /></td></tr></table>
</form>

</div>
</div>

<p style="background:black;width:150px;float:right;text-align:center;padding:0px;"><span class="togglebuttons" onclick="showbox()">Show</span> | <span class="togglebuttons" onclick="hidebox()">Hide</span></p>
</div>
</div><div id="wrapper"><div id="main">
<script type="text/javascript">
if (pageWidth() < 400) {
document.writeln('<link rel="stylesheet" type="text/css" href="mobilestyle.css" />  <h3>You are browsing Physicsguy\'s Reviews in mobile mode.  All of the features are here, nothing has changed, other than the size and functionality of this site!  <br /><br />  ');
}
</script>
<script type="text/javascript">
if((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i))) {
if (document.cookie.indexOf("iphone_redirect=false") == -1)
document.writeln('<link rel="stylesheet" type="text/css" href="mobilestyle.css" />');
}</script>
<!--Begin main content-->

<!--
Database puller and accesser by Chris Hester, www.designdetector.com
-->


<?php

$reviewID = $_GET["reviewID"]; //Set the variable 'reviewID' as from the URL.

if ($reviewID == "") {
echo '
<div class="contentboxtitle">
<h1>User Reviews</h1>
</div>
<div class="contentbox">
<p>Use the search box below this text to find the review you are looking for!</p>
</div>
<div class="contentbox">
';

$countdelims =  file_get_contents("ffdatabase.txt");
$delimnum = substr_count($countdelims, '|');
$entrynum = $delimnum - 1;
$numofentriestoshow1 = "2";
$numofentriestoshow2 = "1";
echo "<p>Currently, there are $entrynum entries.  Below, you can find links to the last $numofentriestoshow1 entries.</p>";
$last1 = $delimnum - $numofentriestoshow1;
$last2 = $delimnum - $numofentriestoshow2;

$pathtouserreview = "userreview.php";  //if you're going to use file_get_contents, make sure to put the WHOLE URL (FULL PATH) in.

$lastlink = "$pathtouserreview?reviewID=$last1";
$lastlink2 = "$pathtouserreview?reviewID=$last2";




//$getlast = file_get_contents("$lastlink");
//$getsecondlast = file_get_contents("$lastlink2");


echo "<a href='$lastlink2'>Most Recent</a>";
echo "<br />";
echo "<a href='$lastlink'>Second Last</a>";


echo "</div>";


}

$editable = $_GET["edit"];

$transback = array(
"\n" => "<br />",
"@#$AdminPassword#@" => "$AdminToPostAs",
); //Simply changes all line breaks in the text file to <br/>s, feel free to add more, just don't delete that line.

$string = file_get_contents("ffdatabase.txt");
$strings = explode('|',$string);
$stringtotrans = $strings[$reviewID];
$stringtrans = strtr("$stringtotrans", $transback);

//Find Password Script//
$wholeReview = "$stringtrans";

$wholeReview = split('=-=-', $wholeReview);

$FindPassword = "$wholeReview[1]";
echo "$FindPassword";

if ($editable == $FindPassword) {
echo "<p><b><span style='color:lightgreen;'>yayz!  it workz!</span></b></p>";
}
else if ($editable == "") {
echo "Edit this review with the password you made when you wrote it.";
}
else if ($editable != $FindPassword) {
echo "<p><b><span style='color:red;'>Wrong Password</span></b></p>";
}

if ($reviewID == "0") {
echo "
<br />
<p>The review you are looking for does not exist.</p>
<p>Please enter a number from 1+.</p>
"; 
}
else if ($reviewID != "") {
echo "<div class='contentboxtitle' style='float:right;height:30px;'><form action='' method='get'><input type='text' name='edit' /><input type='submit' value='Submit' /></div></form>$stringtrans"; //Echo the review
}




?>



<hr />
<div class="contentboxtitle">
<h1>Commenting</h1>
</div>
<div class="contentbox">
<p>Check this box to allow Comments.</p>
<?php 
$currentURL = "/userreview.php?reviewID=$reviewID";
echo $currentURL; ?>
<form>
<input type="checkbox" checked="checked" name="comments" />
<?php echo "<a href='$currentURL&comments=on'>Turn $OnOff Comments</a>"; ?>
</form>
<?php
$CommentingStatus = $_GET["comments"];
if ($CommentingStatus == "on") {
echo "<p style='color:#06fb08;font-weight:bold;'>Comments are currently on.</p>";
}
else if ($CommentingStatus != "on") {
echo "<p style='color:red;font-weight:bold;'>Comments are currently off.</p>";
}
;
?>
</div>
<?php
$string = $_GET["text"];
$patterns[0] = '/quick/';
$patterns[1] = '/brown/';
$patterns[2] = '/lazy/';
$replacements[0] = 'GIGANTIC';
$replacements[1] = 'yellow';
$replacements[2] = 'frickin\'';
echo preg_replace($patterns, $replacements, $string);

echo "<br />";

session_start(); 

if($_GET['comments'] == 'on') 
     $_SESSION['comments'] = 1; 
else if($_GET['comments'] == 'off') 
     $_SESSION['comments'] = 0; 
//if $_GET['comments'] isn't set leave the previous value 

if($_SESSION['comments'] == 1) 
{ 
     //display comments 
}

if ($EnableCommenting == "yes") {
$ShowComments = $_GET["comments"];
if ($ShowComments == 'show') {
echo "SHOWING!";
}
}
else if ($EnableCommenting == "no") {
echo "No Comments allowed!";
}

?>

<!--SCRIPT FOR COUNTING COMMENTS AND SPLITTING THEM INTO PAGES.  REPEAT ECHOING THE COMMENTS UNTIL THE COMMENT # REACHES 10, THEN MAKE BUTTON THAT SAYS 'MORE...', WHICH DISPLAYS ANOTHER 10.-->
<?php
$i=1;
while($i<=10)
  {
  echo "The number is " . $i . "<br />";
  $i++;
  }
?>

<!--End main content-->

</div></div><div id="extension">

<!--Begin right side content-->

<?php include("form.html"); ?>
<?php include("stylebuttons.htm"); ?>

 <h2>Other Links</h12>
  <hr>                      
  <h3><a href="reviews.shtml">Go Back</a></h3>
  <hr>                    
  <a href="index.html">Back To Welcome</a>

<?php include("rightsidemenu.htm"); ?>

<hr />

<a href="setup.shtml">Settings</a>

<!-- End right side content -->

</div><div id="navigation"><div id="navmenu"><ul>

<!-- Begin navigation links...add as necessary -->

<?php include("leftsidemenu.htm"); ?>

<!-- End navigation links -->

</ul></div></div>

<div id="footer"><p class="footspace">&copy; 2009 Physicsguy | <a href="setup.shtml">Settings</a></p></div></div>
</body>
</html>

It's very messy, because I'm experimenting with different things at the same time, but I don't think I'm calling any headers before session start...

**NullPointer** · 11-14-2009, 10:21 PM

Quote:

Originally Posted by NullPointer

You cannot send any headers before calling session_start(). That means you can't have any output or calls to header() prior to calling session_start().

Any output whether it be a call to echo or code outside of the php tags before a call to session_start will send headers. Putting session_start at the top of the script will solve the problem.

**Physicsguy** · 11-14-2009, 11:20 PM

Quote:

Originally Posted by NullPointer

Any output whether it be a call to echo or code outside of the php tags before a call to session_start will send headers. Putting session_start at the top of the script will solve the problem.

So I just stick session_start right at the top of my page? Just put <?php session_start() ?> at the beginning?

**NullPointer** · 11-14-2009, 11:54 PM

That should do it. As long as you start the session at someplace in your script you'll be able to store session variables. Doc: http://php.net/manual/en/function.session-start.php