Removing last comma in PHP?

Question

I have this PHP code:

foreach( $wpdb->get_results(
) as $key => $row) {

echo \"[\'\". $row->DATE . \"\',\". $row->total_sales . \"],\";

}


        

Answer 1

$numItems = count($wpdb->get_results());
$i = 0;

foreach( $wpdb->get_results() as $key => $row) {
if($i+1 == $numItems) {
    echo "['". $row->DATE . "',". $row->total_sales . "]";
  }
else{
echo "['". $row->DATE . "',". $row->total_sales . "],";

}
  $i++;
}