Wordpress Insert Query not working - mysql

Question

I am creating web services for an App, but I am stuck with a insert query. Actually I made a rating system and want to insert value in database with wordpress standard.
Here is my query:
$res = $wpdb->query( $wpdb->prepare(
"INSERT INTO $table_name(rating_postid, rating_posttile, rating_rating, rating_username, rating_userid) VALUES (%d, %s, %d, %s, $d )",
array(
$rating_postid,
$post_title,
$post_rating,
$user_name,
$rating_userid
)
)
);
and here is the other one:
$res = $wpdb->insert(
$table_name,
array(
'rating_postid' => $rating_postid,
'rating_posttile' => $post_title,
'rating_rating' => $post_rating,
'rating_username' => $user_name,
'rating_userid' => $rating_userid
)
);
But no one is working, why?
if($res){
echo 'inserted';
}else{
echo 'not inserted';
}
I am getting else part alwasy
I used these queries very often and they worked me very well, But I am not sure what's wrong with them now... :(

Answer 1

Try this.
$wpdb->insert(
$table_name,
array(
'rating_postid' => $rating_postid,
'rating_posttile' => $post_title,
'rating_rating' => $post_rating,
'rating_username' => $user_name,
'rating_userid' => $rating_userid
),
array(
'%d',
'%s',
'%s',
'%s',
'%d'
)
);

Answer 2

Declaring $wpdb as global and using it to execute an SQL query statement that returns a PHP object
global $wpdb;
$table_name = $wpdb->prefix . "YOUR_TABLE_NAME"; // Enter without prefix
$data = array(
'rating_postid' => $rating_postid,
'rating_posttile' => $post_title,
'rating_rating' => $post_rating,
'rating_username' => $user_name,
'rating_userid' => $rating_userid
);
$result = $wpdb->insert($table_name, $data);
if( $result ){
echo "Inserted..!";
}else{
echo "Something wrong..!";
$wpdb->show_errors();
}