иначе, если не работает в

если условие совпадает, но еще, если условие не работает, когда я вставляю $ total_salary = 10000 и $ capital_type = NO.

if ($this->request->is('post')) {
    $DATA = $this->data;
    $employee_salary = $this->Salary->save($DATA);
    $total_salary = $employee_salary['Salary']['salary'];
    $salary_type = $employee_salary['Salary']['salary_in_ctc'];
    echo $total_salary . $salary_type;
    if (($total_salary > 15000) && ($salary_type === 'YES')) {
        $pf_company = 1500;
        $pf_employee = 1500;
        $percent = 0.62;
        $gross_salary = ($total_salary - $pf_company);
        $base_salary = ($percent * $gross_salary);
        $HRA = ($base_salary / 2);
        $others = ($gross_salary - ($base_salary + $HRA));
        $inhand_salary = ($gross_salary - $pf_employee);
    } elseif (($total_salary < 15000) && ($salary_type === 'NO')) {
        echo'hello';
        $pf_company = 1200;
        $pf_employee = 1200;
        $percent = 0.62;
        $gross_salary = ($total_salary - $pf_company);
        $base_salary = ($percent * $gross_salary);
        $HRA = ($base_salary / 2);
        $others = ($gross_salary - ($base_salary + $HRA));
        $inhand_salary = ($gross_salary - $pf_employee);
    }