Update table and other Update SQL questions

ciresuark · May 15, 2020

I'm new to PHP and I was able to figure out how to populate data from my database into my text fields. I am trying to add the update information to the same php file; however, I am now receiving errors within the data I was able to populate,

Notice: Undefined variable: stmt in C:\xampp\htdocs\Cust_App\update.php on line 47

Warning: Invalid argument supplied for foreach() in C:\xampp\htdocs\Cust_App\update.php on line 47

and errors with the Update statement

Notice: Undefined variable: stmtupdate in C:\xampp\htdocs\Cust_App\update.php on line 96

Notice: Trying to access array offset on value of type null in C:\xampp\htdocs\Cust_App\update.php on line 96

Notice: Undefined variable: customerID in C:\xampp\htdocs\Cust_App\update.php on line 96

I had defined the customerID variable above in the code, but it isn't being captured from here.

I tried setting up this query like the one which gathered the data, but I'm off by a little bit. I would like the option to be able to update all fields.

Any help is appreciated. I'm trying to learn as I may get asked to update other forms in the future. (new boss asks a lot)

<?php
require_once('database.php');


?>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<!-- the head section -->
<head>
    <title>My Guitar Shop</title>
    <link rel="stylesheet" type="text/css" href="main.css" />
</head>

<!-- the body section -->
<body>
<div id="page">

    <div id="header">
        <h1>SportsPro Technical Support</h1>
        <p>Sports management software for the sports enthusiast.</p></h1>
    </div>

    <div id="main">

        <h1>View/Update Customer</h1>

        <form action="update.php" method="get" >
        <?php

        if(isset($_GET['customerID'])) {
            $customerID = filter_input(INPUT_GET, 'customerID', FILTER_SANITIZE_NUMBER_INT);
            $sql = "SELECT * FROM customers  WHERE customerID =$customerID ";
            $stmt = $db->query($sql);

        }

        ?>
        <div id="content">
            <!-- display a table of products -->
            <h2>Customers</h2>
            <form method = "edit">
               <?php foreach ($stmt as $cust) { ?>
                <div>
                    <label>First Name</label>
            <input type="text" name="name" class ="form-control" value ="<?php echo $cust['firstName']; ?>">
            </div><br>
                <div>
                    <label>Last Name</label>
                    <input type="text" name="name" class ="form-control" value ="<?php echo $cust['lastName']; ?>">
                </div><br>
            <div>
            <label>Address</label>
            <input type="text" name="address" class ="form-control" value ="<?php echo $cust['address']; ?>">
                </div><br>
                <div>
                    <label>City</label>
            <input type="text" name="city" class ="form-control" value ="<?php echo $cust['city']; ?>">
                </div><br>
                <div>
                    <label>State</label>
            <input type="text" name="state" class ="form-control" value ="<?php echo $cust['state']; ?>">
                </div><br>
                <div>
                    <label>Country</label>
            <input type="text" name="countryCode" class ="form-control" value ="<?php echo $cust['countryCode']; ?>">
                </div><br>
                <div>
                    <label>Zip Code</label>
            <input type="text" name="postalCode" class ="form-control" value ="<?php echo $cust['postalCode']; ?>">
                </div><br>
                <div>
                    <label>Email </label>
            <input type="text" name="email" class ="form-control" value ="<?php echo $cust['email']; ?>">
                </div><br>
                <div>
                    <label>Phone Number </label>
            <input type="text" name="phone" class ="form-control" value ="<?php echo $cust['phone']; ?>">
                </div><br>
                <div>
                    <label>Password </label>
            <input type="text" name="password" class ="form-control" value ="<?php echo $cust['password']; ?>">
                </div><br>
                <div>

                <?php    }


                ?>
            <input type="Submit" name="Update_Data" value="Update Data"></input>
                    <?php
                    $sql2 = "UPDATE customers SET firstName = ". $stmtupdate['firstName']." WHERE customerID =$customerID ";
                    $stmtupdate = $db->query($sql2);

                    ?>
        </div>
    </div>

    <div id="footer">
        <p>
            &copy; <?php echo date("Y"); ?> SportsPro, Inc.
        </p>
    </div>

</div><!-- end page -->
</body>
</html>

Barand · May 15, 2020

The $stmt variable is set only if $_GET['customerID'] exists.

However you attempt to use it later in the code.

As you are querying for a specific user and will get only a single record, why are you using a loop to process it?

You should be using prepared statements and not putting values directly into your SQL statements.

Sign In

Update table and other Update SQL questions

Recommended Posts

ciresuark

Link to comment

Share on other sites

Barand

Link to comment

Share on other sites

Join the conversation

Browse

Activity

Important Information