[Solved] strtoupper isn’t working in my code [closed]

Question

$code is useless, just use $_POST

if(!empty($_POST['code'])){
    $param[':code'] = strtoupper($_POST['code']);
    $sql .= 'AND `code` = :code';
}

Accepted Answer

$code is useless, just use $_POST

if(!empty($_POST['code'])){
    $param[':code'] = strtoupper($_POST['code']);
    $sql .= 'AND `code` = :code';
}