php - Replacing values in the array nvp -

i have been trying replace values in array i'll name array $currencies when print looks like.

array ( [0] => array     (         [currencylabel] => usa, dollars         [currencycode] => usd         [currencysymbol] => $         [curid] => 1         [curname] => curname1         [check_value] =>          [curvalue] => 0         [conversionrate] => 1         [is_basecurrency] => 1     )  [1] => array     (         [currencylabel] => india, rupees         [currencycode] => inr         [currencysymbol] => ₨         [curid] => 2         [curname] => curname2         [check_value] =>          [curvalue] => 0         [conversionrate] => 50         [is_basecurrency] =>      )  [2] => array     (         [currencylabel] => zimbabwe dollars         [currencycode] => zwd         [currencysymbol] => z$         [curid] => 3         [curname] => curname3         [check_value] =>          [curvalue] => 0         [conversionrate] => 22         [is_basecurrency] =>      ) 

)

here having $conversionrate need divide values present in array $currencies [0] -> array -> [conversionrate] , replace in same place in array. , same operation [1] -> array -> [conversionrate] , on.. current approach follows

$conversionrate = 50;     foreach ($currencies $key => $val) {         $key['conversionrate'] = $key['conversionrate'] / $conversionrate;         if($key['conversionrate'] == 1) {             $key['is_basecurrency'] = 1;         }  else {             $key['is_basecurrency'] = '';         }     }     print_r($key);     die; 

currently not working kindly help

your loop wrong, there no $key['conversionrate'], it's $val['conversionrate']. in fact there doesn't seems reason $key variable, can loop through array with

foreach ($currencies &$val) 

also, want print_r($currencies), not $key