insert into wordpress table wit wpdb code example

Example 1: wordpress wpdb

<?php
// 1st Method - Declaring $wpdb as global and using it to execute an SQL query statement that returns a PHP object
global $wpdb;
$results = $wpdb->get_results( "SELECT * FROM {$wpdb->prefix}options WHERE option_id = 1", OBJECT );

Example 2: insert into wp table

global $wpdb;
$table = $wpdb->prefix.'you_table_name';
$data = array('column1' => 'data one', 'column2' => 123);
$format = array('%s','%d');
$wpdb->insert($table,$data,$format);
$my_id = $wpdb->insert_id;