Question

I’m working on making a receipt for my registration code and I keep getting this error:

mysql_fetch_array() expects parameter 1 to be resource, boolean given in

<?php
// (2)gather details of CustomerID sent
$customerId = $_GET['CustomerID'] ;
// (3)create query
$query = "SELECT * FROM Customer WHERE CustomerID = $customerId";
// (4) Run the query on the customer table through the connection
$result = mysql_query ($query);
// (5) print message with ID of inserted record
if ($row = mysql_fetch_array($result))
{
print "The following Customer was added";
print "<br>Customer ID: " . $row["CustomerID"];
print "<br>First Name: " . $row["Firstnames"];
print "<br>Surname: " . $row["Surname"];
print "<br>User Name: " . $row["Username"];
print "<br>Email: " . $row["Email"];
print "<br>Password: " . $row["Password"];
}
?>

Answer 1

That error messages means that $result respective mysql_query() didn’t return a valid resource.

Please try mysql_query($query) or die(mysql_error());. By the way I don’t see a mysql_connect() and mysql_select_db()!

Warning:

Your code is very insecure (–>SQL injection)!

Please escape all data coming from $_GET or $_POST via mysql_real_escape_string() or intval (if it is an integer!).