Dynamic CMS - Parsing data though if(isset)

Question

KingGold171 0 Newbie Poster

10 Years Ago

Hello fellow PHP trained monkeys :D

I am trying to find a way to have a basic CMS management system but to be dynmic on one PHP page only, the most part works for the first time of selecting the username, and then from either add or minus buton.

The error occurs when submitting as it only parses the amount and type, and not the selected username, or current loged in admi session username.

Any ideas how to keep data parsing though the multiple if(isset) ?

~KG171~

<body>
<?php
include('../SQLconfig.php');

$query = "SELECT * FROM players ;";
$result = mysql_query($query);

echo "<table border = ' 0 '>
<tr>
<th>XO Credit Mangement</th>
</tr >";

while($row = mysql_fetch_array($result))
{
echo "<tr>";
$url = "XOCredits.php?username=" . $row['username'];
    echo "<td><a href=" . $url . ">"
    . $row['id'] 
    . " - " 
    . $row['rank'] 
    . " - " 
    . $row['username'] 
    . " - " 
    . $row['credits']
    . "</a></td>";

echo "</tr>";
}
echo "</table>";

?>
<?php
if(isset($_GET['username']))
{
$username = $_GET['username'];
$beforeCredits = $row['credits'];
echo $username . "<a href='XOCredits.php?add'><button>Add Credits</button></a>" . "<a href='XOCredits.php?minus'><button>Minus Credits</button></a>";
}
?>

<?php
if(isset($_GET['add']))
{
$username =  $_POST['username'] ;
echo "<u>" . $username . "</u>" ;
echo "
<form action='XOCredits.php?ac' method='post'>
<input type='text' name='username' value='$username'/>
<p>Add Credits Amount:</p>
<input type='text' name='amount' />
<br />
<input type='submit' name='submit' value='Submit' />
</form>
";
}
?>
<?php
if(isset($_GET['minus']))
{
$username =  $_POST['username'] ;
echo "<u>" . $username . "</u>" ;
echo "
<form action='XOCredits.php?mc' method='post'>   
<p>Take Away Credits Amount:</p>
<input type='text' name='amount' />
<input type='hidden' name='username' value='$username'/>
<br />
<input type='submit' name='submit' value='Submit' />
</form>
";
}
?>
<?php
if(isset($_GET['ac']))
{
$type = "add";
$amount = $_POST['amount'];
$afterCredits = $beforeCredits + $amount ;

$sentFrom = $_SESSION['u_name'];
$sentTo = $_GET['username'];

$query = "INSERT INTO creditlog (from,to,amount,type)
VALUES ('$sentFrom','$sentTo','$afterCredits','$type');";

mysql_query($query) or die (mysql_error());

echo $query;

$credits    = $afterCredits;
$query2 = ("UPDATE players SET credits='$credits' WHERE username='$username'
;")or die(mysql_error());   

mysql_query($query2);

echo $query2;
}
?>

<?php
if(isset($_GET['mc']))
{
$type = "minus";
$amount = $_POST['amount'];
$afterCredits = $beforeCredits - $amount ;

$sentFrom = $_SESSION['u_name'];
$sentTo = $_GET['username'];

$query = "INSERT INTO creditlog (from,to,amount,type)
VALUES ('$sentFrom','$sentTo','$afterCredits','$type');";

mysql_query($query) or die (mysql_error());

echo $query;

$credits    = $afterCredits;
$query2 = ("UPDATE players SET credits='$credits' WHERE username='$username'
;")or die(mysql_error());   

mysql_query($query2);

echo $query2;
}
?>


<br /><a href="index.php"><button>Home</button></a>
</body>

php

3 Contributors
11 Replies
306 Views
5 Hours Discussion Span
Latest Post 10 Years Ago Latest Post by diafol

All 11 Replies

Unimportant 18 Junior Poster

10 Years Ago

First you want to start a session.
session_start();

diafol

10 Years Ago

I'd suggest some separation of the code and the html too. This may look fine to you now, but 2 months down the line, when something doesn't quite work, you'll be scratching your head. If you can put most of the functionality into functions and call those where required it may help.

Keeping a live login requires keeping session data alive from page to page (EVERY page) with, as Unimportant states, a session_start()

diafol

10 Years Ago

from and to are reserved words, so you have to backtick them:

$query = "INSERT INTO creditlog (`from`,`to`,`amount`,`type`) VALUES ('$sentFrom','$sentTo','$afterCredits','$type');";

Edited 10 Years Ago by diafol

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KingGold171 0 Newbie Poster · Answer 1 · 2013-07-19T16:13:36+00:00

Okay, thank you unimportant and diafol,

the sentFrom is working.

Just the matter of gettig the sentTo to be set as the username selected

select username
add | minus credits
amount (username is lost here onwards)
submit
do add credits | do minus credits
do update player credits field

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''from','to','amount','type'') VALUES ('admin','','10','add')' at line 1

Code updated;

<body>
<?php session_start();

$curUser = $_SESSION['u_name'];

include('../SQLconfig.php');

$query = "SELECT * FROM players ;";
$result = mysql_query($query);

echo "<table border = ' 0 '>";
echo "<tr>";
echo "<p>" . $curUser . "</p>";
echo "<th>XO Credit Mangement</th>";
echo "</tr >";

while($row = mysql_fetch_array($result))
{
echo "<tr>";
$url = "XOCredits.php?username=" . $row['username'];
    echo "<td><a href=" . $url . ">"
    . $row['id'] 
    . " - " 
    . $row['rank'] 
    . " - " 
    . $row['username'] 
    . " - " 
    . $row['credits']
    . "</a></td>";

echo "</tr>";
}
echo "</table>";



if(isset($_GET['username']))
{
$username = $_GET['username'];
$beforeCredits = $row['credits'];
echo $username . "<a href='XOCredits.php?add'><button>Add Credits</button></a>" . "<a href='XOCredits.php?minus'><button>Minus Credits</button></a>";
}



if(isset($_GET['add']))
{
$username =  $_POST['username'] ;
echo "<u>" . $username . "</u>" ;
echo "
<form action='XOCredits.php?ac' method='post'>
<p>Add Credits Amount:</p>
<input type='text' name='amount' />
<br />
<input type='submit' name='submit' value='Submit' />
</form>
";
}



if(isset($_GET['minus']))
{
$username =  $_POST['username'] ;
echo "<u>" . $username . "</u>" ;
echo "
<form action='XOCredits.php?mc' method='post'>   
<p>Take Away Credits Amount:</p>
<input type='text' name='amount' />
<br />
<input type='submit' name='submit' value='Submit' />
</form>
";
}



if(isset($_GET['ac']))
{
$type = "add";
$amount = $_POST['amount'];
$afterCredits = $beforeCredits + $amount ;

$sentFrom = $curUser ;

$sentTo = $_GET['username'];

$query = "INSERT INTO creditlog ('from','to','amount','type'')
VALUES ('$sentFrom','$sentTo','$afterCredits','$type');";

mysql_query($query) or die (mysql_error());

echo $query;

$credits    = $afterCredits;
$query2 = ("UPDATE players SET credits='$credits' WHERE username='$username'
;")or die(mysql_error());   

mysql_query($query2);

echo $query2;
}

if(isset($_GET['mc']))
{
$type = "minus";
$amount = $_POST['amount'];
$afterCredits = $beforeCredits - $amount ;

$sentFrom = $_SESSION['u_name'];
$sentTo = $_GET['username'];

$query = "INSERT INTO creditlog ('from','to','amount','type'')
VALUES ('$sentFrom','$sentTo','$afterCredits','$type');";

mysql_query($query) or die (mysql_error());

echo $query;

$credits    = $afterCredits;
$query2 = ("UPDATE players SET credits='$credits' WHERE username='$username'
;")or die(mysql_error());   

mysql_query($query2);

echo $query2;
}
?>


<br /><a href="index.php"><button>Home</button></a>
</body>

diafol · Answer 2 · 2013-07-19T16:44:58+00:00

You have an add and a minus form. Why not just have one and enter e.g. 500 or -500?

<?php
    session_start();

    require 'includes/functions.php'; //file containing your functions with DB connection

    if(!isset($_SESSION['admin']))header("Location: index.php"); exit;
    if(!isset($_SESSION['user_id']))header("Location: userlist.php"); exit;
    $user_id = $_SESSION['user_id'];
    list($credit, $username) = getUserDetails($user_id); //this is a function to get user details from the DB
?>

<h3>Change Credit for <?php echo $username;?></h3>
<form action="..." method="post">
    <!-- use the hidden id below to check against the session user id -->
    <input type="hidden" name="user_id" value="<?php echo $user_id;?>" />
    <input type="text" name="credits" value="<?php echo $credits;?>" disabled="disabled" />
    <input type="num" name="modify" min="-500" max="500" value="0" />
    <input type="submit" name="send" value="Modify Credit" />
</form>

Just a suggestion. Loads of ways to do this. You could also have quick add/minus buttons with values either linked via js to the 'modify' number box or as direct submission (php or ajax) to change DB vals and update form.

I'm assuming you have a list of players on a page (with links) [userlist.php], which have something like this:

<a href="modifycredit.php?id=<?php echo $user_id;?>"><?php echo $username;?></a>

KingGold171 0 Newbie Poster · Answer 3 · 2013-07-19T16:51:11+00:00

Hmmm, Your way would reduce the amount of code lines need to recieve same result and improve performance , but would then require some more scripts to detect if the input amount contains the -<num>

if (amount contains - )
{
$afterCredits = $beforeCredits - <num>;
$type = "minus";
}
else
{
$afterCredits = $beforeCredits + <num>;
$type = "add";
}

diafol · Answer 4 · 2013-07-19T17:24:22+00:00

Why should it? It's the same SQL table right? As long as it's an integer:

UPDATE usercredits SET credits = credits + $modify WHERE user_id = $id

$modif can be -123 or 389 - doesn't matter, should update correctly.

KingGold171 0 Newbie Poster · Answer 5 · 2013-07-19T17:36:34+00:00

Diafol, would you like to see the working example of the current code, which partly does what i want to it to, hopefully after seeing i yo can help get it working with currnt design setup.

(I'll PM the details if you wsh to see it)

Updated Scripts:
http://pastebin.com/qyBefFTk

Unimportant 18 Junior Poster · Answer 6 · 2013-07-19T17:46:40+00:00

$query = "INSERT INTO creditlog ('from','to','amount','type'') VALUES ('$sentFrom','$sentTo','$afterCredits','$type');";

'type'' should be 'type'

KingGold171 0 Newbie Poster · Answer 7 · 2013-07-19T17:52:38+00:00

'type'' should be 'type'

Fixed,

$query = "INSERT INTO creditlog (from,to,amount,type)
VALUES ('$sentFrom','$sentTo','$afterCredits','$type');";

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'from,to,amount,type) VALUES ('admin','','10','add')' at line 1

Unimportant 18 Junior Poster · Answer 8 · 2013-07-19T20:19:24+00:00

This is only a hypothesis, perhaps '' is not a valid input.

Dynamic CMS - Parsing data though if(isset)

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