Store mysql column to array PHP - php

Question

I use this to get a column named "device_token" and save the values to an array:
mysql_connect("localhost", "xxxx", "xxxx") or die ("Not connected");
mysql_select_db("xxxxx") or die ("no database");
$query = "SELECT xxxx_device_token FROM device_tokens";
$result_array = array();
while($row = mysql_fetch_assoc($result))
{
$result_array[] = $row['xxxx_device_token'];
}
print_r($result_array);
But all I get is an empty array, what is the problem ?

Answer 1

your code is not correct,
try like this
mysql_connect("localhost", "xxxx", "xxxx") or die ("Not connected");
mysql_select_db("xxxxx") or die ("no database");
$query = "SELECT xxxx_device_token FROM device_tokens";
$result = mysql_query($query);
$result_array = array();
while($row = mysql_fetch_assoc($result))
{
$result_array[] = $row['xxxx_device_token'];
}

Answer 2

$result is empty and $query is not used anywhere.
You need something like this:
$result = mysql_query($query);
http://php.net/manual/en/function.mysql-query.php

Answer 3

Your code is not correct. You didn't execute the query. You need to do this :
mysql_connect("localhost", "xxxx", "xxxx") or die ("Not connected");
mysql_select_db("xxxxx") or die ("no database");
$result_array = array();
$query = mysql_query("SELECT xxxx_device_token FROM device_tokens");
while($row = mysql_fetch_assoc($query))
{
$result_array[] = $row['xxxx_device_token'];
}
print_r($result_array);
But mysql_query is deprecated in new verion of PHP, so you need to do this with mysqli_query.

Answer 4

Try this,
$query = "SELECT xxxx_device_token FROM device_tokens";
$result = mysql_query($query);
$result_array = array();
while($row = mysql_fetch_assoc($result))
{
$result_array[] = $row['xxxx_device_token'];
}
Dont use Mysql functions. It is deprecated. Please move to Mysqli (or) PDO

Answer 5

You have mysql_fetch_assoc($result) in the while statement, but no variable declaration for $result.
You must execute your query:
$result = mysql_query($query);

Answer 6

Assuming this is not a copy & paste error, you are probably missing this line:
$result = mysql_query($query);

Answer 7

Try not to use mysql_*, it's not recommended, use mysqli_* , ideally you should be using PDO for database connectivity.
That said you're missing this,
$result = mysql_query($query);

Answer 8

u have forgotten to execute your mysql query, like this
$result = mysql_query($con,"SELECT * FROM Persons");