I have array data as shown below, I want to store 'sale' value into database if my currency are USD.

 Array ( [currency] =>  USD [sale] => 9120.00  [buy] => 8970.00  ) 
 Array ( [currency] =>  SGD [sale] => 6653.75  [buy] => 6520.75  ) 
 Array ( [currency] =>  HKD [sale] => 1173.40  [buy] => 1152.10  ) 
 Array ( [currency] =>  CHF [sale] => 8685.40  [buy] => 8517.40  ) 
 Array ( [currency] =>  GBP [sale] => 13958.80  [buy] => 13675.80  ) 
 Array ( [currency] =>  AUD [sale] => 8054.05  [buy] => 7885.05  ) 
 Array ( [currency] =>  JPY [sale] => 105.10  [buy] => 102.40  ) 
 Array ( [currency] =>  SEK [sale] => 1247.90  [buy] => 1216.80  ) 
 Array ( [currency] =>  DKK [sale] => 1590.95  [buy] => 1547.75  ) 
 Array ( [currency] =>  CAD [sale] => 8756.35  [buy] => 8568.35  ) 
 Array ( [currency] =>  EUR [sale] => 11776.75  [buy] => 11555.75  ) 
 Array ( [currency] =>  SAR [sale] => 2441.35  [buy] => 2382.35  ) 
 Array ( [currency] =>  NZD [sale] => 6550.75  [buy] => 6389.75  ) 
 Array ( [currency] =>  CNY [sale] => 1346.75  [buy] => 1322.35  )

Teşekkürler.

Kodumu İşte:

foreach ($cur_array as $curs) {
    print_r ($curs)."<br>";
    if ($curs['currency'] = "USD") {
        $curs_sale = $curs['sale'];
            $curs_name = $curs['currency'];
            $db->query("UPDATE currency SET rate = '".
                $curs_sale."' WHERE currency_id ='".$curs_name."'");
    }
}