How can I arrange the column names to display the data by substituting “$variables”?

Question

so this is what I have so far.

$query = mysql_query("SELECT * FROM tablename ORDER BY id");
while($r = mysql_fetch_array($query)){
extract($r);

echo $variables;
}

The error I get cause of above reason

Notice: Undefined variable: variables in

I've got honestly no idea how to do it ._ .

Answer 1

You should use fetch_assoc() since it returns an associative array with the names and values of the rows. This would allow extract() to generate the correct symbol names and therefor if there is a column called variables the variable $variables would exist.

A more common approach is just to access the data by $r['columnname']; . Note that I updated your code with mysqli functions (since mysql_* is not so good..).

$query = $DB->query("SELECT * FROM tablename ORDER BY id");
while($r = $query->fetch_assoc()){
    extract($r);
    echo $variables;
}