Firstly, sorry for my bad english. I hope you will understand what i need. I started a website with products bidding. I have a products page where users can see all the products and a button that send the user to a form where he cand input a new price for that product and it updates the existing price in the database with the new one. But i want this to happen only if the initial price is lower than the price that user inputs.
How can i do that ? I was thiking that i need another column newprice and compare it with price but i don't know how to do that...
This is the table "produse" :
id | titlu | stare | price | descriere
_____________________________________
1 | asd | asd | 140 | asd
This is the products page (produs_user.php)
<?php
include('connect.php');
?>
<?php
//create the query
$result = mysqli_query($con,"select * from produse");
//return the array and loop through each row
while ($row = mysqli_fetch_array($result))
{
?>
<div class="produse">
<div class="produse-header">
<h3><?php echo $row['titlu'];?></h3>
<h5><?php echo $row['stare'];?></h5>
</div>
<div class="produse-continut">
<textarea readonly><?php echo $row['descriere'];?></textarea>
</div>
<div class="produse-pret">
<p><?php echo $row['price'];?> lei</p>
</div>
<div class="produse-buton">
<form action="liciteaza.php">
<input type="submit" value="Liciteaza">
</form>
</div></div>
<?php
}
mysqli_close($con);
?>
The above page sends users to liciteaza.php where i have a field where users inputs the new price This is the liciteaza.php
<?php
include('connect.php');
?>
<?php
//create the query
$result = mysqli_query($con,"select * from produse");
//return the array and loop through each row
while ($row = mysqli_fetch_array($result))
{
?>
<form method="post" action="update_pret.php">
<div class="produse">
<div class="produse-header">
<h3><?php echo $row['titlu'];?></h3>
<h5><?php echo $row['stare'];?></h5>
</div>
<div class="produse-continut">
<textarea readonly><?php echo $row['descriere'];?></textarea>
</div>
<div class="produse-pret">
<p><input name="price" class="modifica-pret" id="price" value="<?php echo $row['price']; ?>"></p>
<input name="id" type="hidden" id="id" value="<?php echo $row['id']; ?>">
</div>
<div class="produse-buton">
<input type="submit" value="Liciteaza">
</form>
</div></div>
<?php
}
mysqli_close($con);
?>
That page send me to update_pret.php where i update the new price to mysql table
This is the update_pret.php
<?php
include('connect.php');
// update data in mysql database
$result=mysqli_query($con,"UPDATE produse SET price='$_POST[price]' WHERE id='$_POST[id]'");
// if successfully updated.
if($result)
{
header("location:produse_user.php");
}
else
{
echo "ERROR";
}
mysqli_close($con);
?>
All these scripts are working perfectly but like i said i need this to work only when the new price chosen by the user is bigger than the initial price.
