-1
배열에서 데이터를 추출하는 데 도움이 필요합니다. 나는 (MySQL의에서 반환)과 같은 구조로되어 배열 $prices
있습니다mysql 반환 된 배열 내부의 키를 확인할 수있는 방법이 있습니까?
Array
(
[0] => Array
(
[pricegroup] => doppia
[date] => 2014-09-01
[price] => 60
[id] => 974
)
[1] => Array
(
[pricegroup] => doppia
[date] => 2014-09-02
[price] => 60
[id] => 975
),
...
)
그래서 내가 날짜 주어진 배열에서 가격을 얻을 필요, 현재 내가 루프를 일을하지만 난 그것을 slow..and 생각 당신은 모든 날짜를 추가, 배열에 그런 식으로 반복 할 필요가 없습니다
<?
$prices = json_decode('[{"pricegroup":"doppia","date":"2014-09-01","price":"60","id":"974"},{"pricegroup":"doppia","date":"2014-09-02","price":"60","id":"975"},{"pricegroup":"doppia","date":"2014-09-03","price":"60","id":"976"},{"pricegroup":"doppia","date":"2014-09-04","price":"70","id":"977"},{"pricegroup":"doppia","date":"2014-09-05","price":"60","id":"978"},{"pricegroup":"doppia","date":"2014-09-06","price":"60","id":"979"},{"pricegroup":"doppia","date":"2014-09-07","price":"60","id":"980"},{"pricegroup":"doppia","date":"2014-09-08","price":"60","id":"981"},{"pricegroup":"doppia","date":"2014-09-09","price":"60","id":"982"},{"pricegroup":"doppia","date":"2014-09-10","price":"60","id":"983"},{"pricegroup":"doppia","date":"2014-09-11","price":"60","id":"984"},{"pricegroup":"doppia","date":"2014-09-12","price":"60","id":"985"},{"pricegroup":"doppia","date":"2014-09-13","price":"60","id":"986"},{"pricegroup":"doppia","date":"2014-09-14","price":"60","id":"987"},{"pricegroup":"doppia","date":"2014-09-15","price":"60","id":"988"},{"pricegroup":"doppia","date":"2014-09-16","price":"60","id":"989"},{"pricegroup":"doppia","date":"2014-09-17","price":"60","id":"990"},{"pricegroup":"doppia","date":"2014-09-18","price":"60","id":"991"},{"pricegroup":"doppia","date":"2014-09-19","price":"60","id":"992"},{"pricegroup":"doppia","date":"2014-09-20","price":"60","id":"993"},{"pricegroup":"doppia","date":"2014-09-21","price":"60","id":"994"},{"pricegroup":"doppia","date":"2014-09-22","price":"60","id":"995"},{"pricegroup":"doppia","date":"2014-09-23","price":"60","id":"996"},{"pricegroup":"doppia","date":"2014-09-24","price":"60","id":"997"},{"pricegroup":"doppia","date":"2014-09-25","price":"60","id":"998"},{"pricegroup":"doppia","date":"2014-09-26","price":"60","id":"999"},{"pricegroup":"doppia","date":"2014-09-27","price":"60","id":"1000"},{"pricegroup":"doppia","date":"2014-09-28","price":"60","id":"1001"},{"pricegroup":"doppia","date":"2014-09-29","price":"60","id":"1002"},{"pricegroup":"doppia","date":"2014-09-30","price":"60","id":"1003"}]',true);
function getPriceOfDay($day,$from) {
$res; $loops = count($from)-1;
for ($i = 0; $i <= $loops; $i++) {
if($day === $from[$i][date]) {
$res .= '<p>Found: '.$from[$i][date].' for '.$from[$i][price].'</p>';
}
}
return $res;
}
echo getPriceOfDay('2014-09-01',$prices);
echo getPriceOfDay('2014-09-02',$prices);
echo getPriceOfDay('2014-09-03',$prices);
echo getPriceOfDay('2014-09-04',$prices);
echo getPriceOfDay('2014-09-05',$prices);
echo getPriceOfDay('2014-09-06',$prices);
echo getPriceOfDay('2014-09-07',$prices);
echo getPriceOfDay('2014-09-08',$prices);
echo getPriceOfDay('2014-09-09',$prices);
echo getPriceOfDay('2014-09-10',$prices);
echo getPriceOfDay('2014-09-11',$prices);
echo getPriceOfDay('2014-09-12',$prices);
echo getPriceOfDay('2014-09-13',$prices);
echo getPriceOfDay('2014-09-14',$prices);
echo getPriceOfDay('2014-09-15',$prices);
echo getPriceOfDay('2014-09-16',$prices);
echo getPriceOfDay('2014-09-17',$prices);
echo getPriceOfDay('2014-09-18',$prices);
echo getPriceOfDay('2014-09-19',$prices);
echo getPriceOfDay('2014-09-20',$prices);
echo getPriceOfDay('2014-09-21',$prices);
echo getPriceOfDay('2014-09-22',$prices);
echo getPriceOfDay('2014-09-23',$prices);
echo getPriceOfDay('2014-09-24',$prices);
echo getPriceOfDay('2014-09-25',$prices);
echo getPriceOfDay('2014-09-26',$prices);
echo getPriceOfDay('2014-09-27',$prices);
echo getPriceOfDay('2014-09-28',$prices);
echo getPriceOfDay('2014-09-29',$prices);
echo getPriceOfDay('2014-09-30',$prices);
echo '<pre>';
print_r($prices);