print a value from a select statement in PHP - php

Question

All I am trying to do is display the price of an item from an mysql database in an <h1> tag. Nothing fancy or difficult. I have a page that has 60 item on it, and I need to update prices on our database 2 to 3 times a year. This would keep this page consistent with the database.
I have establish a standard mysql connect. I have defined a variable from a select statement. Now I just need to know how to display the info. when I run this php, I get an error "Notice: Undefined variable: products in /Applications/MAMP/htdocs/staging/dynamic_mixers.php on line 123"
Below is my code.
$products = "SELECT Base_Price FROM products Where record_number=1072;
echo "<h1>'.$products['Base_Price'].</h1>

Answer 1

In php, you write the query:
$products = "SELECT Base_Price FROM products Where record_number=1072"; //don't forget end quote
You make a connection to the database like this:
$connection = new mysqli("localhost", "user", "password", "database");
Then you send the query to be processed using the connection, like this:
$results = mysqli_query($connection, $products);
Then you need to loop through the results (even if there is only one)
while ($row = mysqli_fetch_assoc($result)) {
}
In that loop you can access $row['Base_Price']
while ($row = mysqli_fetch_assoc($result)) {
echo $row['Base_Price']
}
Read more about it here: PHP and MySQL

Answer 2

I prefer to use PHP data Objects over mysqli. Better performance and less chance of being susceptible to injection attacks.
// setup the query
$dbh = new PDO
(
'mysql:host=localhost;dbname=myDatabase',
$username,
$password,
array
(
PDO::ATTR_DEFAULT_FETCH_MODE=>PDO::FETCH_ASSOC
)
);
$query = $dbh->Prepare('SELECT Base_Price FROM products Where record_number=? LIMIT 1');
// execute for one item
$query->execute(array(1072));
$singlePrice = $query->fetch();
// execute for the next item
$query->execute(array(1073));
$singlePrice = $query->fetch();
// execute for the third item, etc
$query->execute(array(1074));
$singlePrice = $query->fetch();
You can throw all of the executes in a for loop and get maximum performance since PDO is using a prepared statement.