PHP While Loop that gets data from the database - php

Question

I'm building a mobile application that requires push notifications to be sent whenever a new post is added.
Here's the PHP notification script: (it should be added inside the loop so it will be used again for each result.
$to = (should get DEVICEID from the database).
$title = "A new request"
sendPush($to,$title,$message);
function sendPush($to,$title,$message){
//Sends noti.
}
So How do I place the above code in a while loop, and get the DEVICEID from the database and place it into $to ?

Answer 1

I suppose that you have an mysql connection set up and that you are using mysqli.
After you have created the connection to the database, you should have a variable holding your connection:
$con = mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
So right now you are able to execute a SQL statement to your database. Your SQL statement should look similarily to this:
$sql = "SELECT DeviceID FROM Devices";
Now we can execute the statement we created to the database:
$result = mysqli_execute($con, $sql);
Now we get a result object. We can use this to get a while loop:
while ($row = mysqli_fetch_assoc($result)) {
$to = $row["DeviceID"];
// Rest of your code, this will be executed for every DeviceID in the database.
}
If you are using PDO you can read more about it here: http://php.net/manual/en/ref.pdo-mysql.php
But in general, the steps are the same.