Question

Hi I’m trying to write my first WordPress plugin. I’m using classes to make it easier to maintain.

I’m wondering how I can use the WPDB class in my wordpress plugin.

Answer 1

$wpdb is a global variable, which is an instantiation of the class already set up to talk to the WordPress database.

you can use it in this manner –

global $wpdb;
$result = $wpdb->get_row( "SELECT value FROM ".$wpdb->prefix."plg_table" );
echo $result;

For more info you can also check this link – Link To CODEX

If its your first i prefer to modify the existing one that i suggested few days back, check this link as it may help you showing plugin in frontend of website or in page