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 Post subject: why is tjis not updating
PostPosted: Tue Apr 04, 2023 9:51 pm 
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Joined: Mon Apr 03, 2023 9:50 pm
Posts: 5
Quote:
This code is just to update the receiptno by adding 1 and displaying the value of receiptno.
The only prob, it does neither.?? says "updated but NOT


Code:
<?php
$link = mysqli_connect("localhost", "root", "", "homedb");
// Check connection
if($link === false){ die("ERROR: Could not connect. " . mysqli_connect_error()); }

$id = 'id';
$receiptno='';

/* Perform a query, check for error */
$sql = "UPDATE control SET
receiptno = '$receiptno' + 1 where id='$id'";
echo $receiptno;
if(mysqli_query($link, $sql)){ echo "updated"; }
else { echo "ERROR: Could not able to execute $sql. " . mysqli_error($link); }
// Close connection
mysqli_close($link);
?>


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 Post subject: Re: why is tjis not updating
PostPosted: Tue May 02, 2023 8:47 am 
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Site Admin

Joined: Wed Sep 12, 2007 2:18 pm
Posts: 3931
Hi.

Here is the correct code:

Code:
$sql = "UPDATE control SET receiptno = receiptno + 1 where id='$id'";


(initially receiptno should be =0 in the database)

Regards,
Codelobster Team.


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