Question

How do I get data from a database using php and show it?

The database table has columns, labeled as ID & Number. ID is unique & fixed whereas Number is just a non-unique number. If someone visits
http://example.com/show.php?ID=32, and show.php should fetch the Number & display "Your number is XXX”

Please provide the code-samples.

Answer 1

<?php
//Connect to DB
$db = mysql_connect("localhst","user","pass") or die("Database Error");
mysql_select_db("db_name",$db);

//Get ID from request
$id = isset($_GET['id']) ? (int)$_GET['id'] : 0;

//Check id is valid
if($id > 0)
{
    //Query the DB
    $resource = mysql_query("SELECT * FROM table WHERE id = " . $id);
    if($resource === false)
    {
        die("Database Error");
    }

    if(mysql_num_rows($resource) == 0)
    {
        die("No User Exists");
    }

    $user = mysql_fetch_assoc($resource);

    echo "Hello User, your number is" . $user['number'];
}

This is very basic but should see you through.