在PHP中使用mysql数组数据

Question

how to convert array data to work with it in this case? especially in wordpress. when i print the results i get stdClass Object.

Array
(
    [0] => stdClass Object
        (
            [posts_id] => 336
            [value] => 8
            [count(*)] => 2
        )

    [1] => stdClass Object
        (
            [posts_id] => 329
            [value] => 2
            [count(*)] => 1
        )

    [2] => stdClass Object
        (
            [posts_id] => 327
            [value] => 3
            [count(*)] => 1
        )

    [3] => stdClass Object
        (
            [posts_id] => 338
            [value] => 1
            [count(*)] => 1
        )

)

and this is my query

   <?php global $wpdb;

$test = $wpdb->get_results('select
    posts_id,
    value,
    count(*)
From
    wp_mrp_rating_item_entry_value
group by
    posts_id,
    value
order by
    count(*) desc'); 
echo '<pre>';
print_r($test);
echo '</pre>';

How can i get the data out of this array to save into another database table? Or how can i at least save the single values into variables for every id? I tried allot but i have no idea yet so i hope someone is knowing it better than me? thanks for any help.

Answer 1

foreach($test as $item) :

$ID = $item->posts_id; 
var_dump($ID); //test variable


//if you want to place into the db 

   //DB CODE>>>

$firstName = "Dylan"  //example of field in db to change
$LastName =  "bloggs" //example of second field in db to change

$wpdb->query( $wpdb->prepare( 
    "
        INSERT INTO $wpdb->name_of_wp_table_goes_here
        ( name_of_field_goes_here )
        VALUES ( %d, %s, $s ) 
    ", 
    $ID,
    $field
) );

   //<<<DB END

endforeach; 

Remove the DB code if you want to manually store into a database.

You could also access other keys the same way. e.g., $value = $item->value; -- you would place this in the foreach loop and continue.

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