数组处理问题，求优化

飞凡的陀螺 2014-12-26 11:33:37

有一个这样查询出来的数组。



$result = [

	['month'=>08,'price'=>218],

	['month'=>12,'price'=>140],

];

最终需要转换成一个字符串，用于前台js
格式类似：[49.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, null, null]
显示的是每月的销售情况，没有值就为null
比如一月份的price为49.9

我的做法：
感觉有点麻烦，求优化



        //先构造类似  ['01'=>0,'02'=>0 .... '12'=>0]  这种格式的数组

        $fullMonth = [];

        for($i=1;$i<=12;$i++){

            $fullMonth[str_pad($i,2,'0',STR_PAD_LEFT)] = 0;

        }

        //  遍历数组  对应月份有值就放到新建的数组里

        $i = 0;

        foreach($fullMonth as $month=>$value){

            foreach($result as $record){

                if($month == $record['month']){

                    $fullMonth[$month] = $record['price'];

                }

            }

            $i++;

        }

        return '[' . implode(',',$fullMonth) . ']';

...全文

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xuzuning 2014-12-26

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$r = array_fill(0, 12, null);
$result = [
    ['month'=> '08', 'price'=> 218],
    ['month'=> '12', 'price'=> 140],
];
foreach($result as $v) {
  $r[$v['month'] - 1] = $v['price'];
}
echo json_encode($r);

[null,null,null,null,null,null,null,218,null,null,null,140]

傲雪星枫 2014-12-26

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为什么不用json格式？


$result = [
    ['month'=>08,'price'=>218],
    ['month'=>12,'price'=>140],
];
echo json_encode($result); // [{"month":0,"price":218},{"month":12,"price":140}]


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=utf-8">
  <title> New Document </title>
 </head>

 <body>
  <?php
    $result = [
        ['month'=>08,'price'=>218],
        ['month'=>12,'price'=>140],
    ];
  ?>
  <div id="result"></div>
  <script type="text/javascript">
  var result = <?php echo json_encode($result); ?>;
  var tmp = '';
  for(var i=0; i<result.length; i++){
      tmp += result[i].month + ' = ' + result[i].price + '<br>';
  }
  document.getElementById('result').innerHTML = tmp;
  </script>
 </body>
</html>

傲雪星枫 2014-12-26

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這樣


<?php
$res = [['y'=>'2014-12-03','item'=>263],['y'=>'2014-12-04','item'=>168]];
$tmp = array();

foreach($res as $v){
	$tmp[$v['y']] = $v['item'];
}

$start = 1;
$end = 31;

$result = array();

for($i=$start; $i<=$end; $i++){
	$key = date('Y-m-d',strtotime('2014-12-'.$i));
	$item = null;
	if(isset($tmp[$key])){
		$item = $tmp[$key];
	}

	array_push($result, array('y'=>$key,'item'=>$item));
}

echo json_encode($result, JSON_PRETTY_PRINT);
?>



[
    {
        "y": "2014-12-01",
        "item": null
    },
    {
        "y": "2014-12-02",
        "item": null
    },
    {
        "y": "2014-12-03",
        "item": 263
    },
    {
        "y": "2014-12-04",
        "item": 168
    },
    {
        "y": "2014-12-05",
        "item": null
    },
    {
        "y": "2014-12-06",
        "item": null
    },
    {
        "y": "2014-12-07",
        "item": null
    },
    {
        "y": "2014-12-08",
        "item": null
    },
    {
        "y": "2014-12-09",
        "item": null
    },
    {
        "y": "2014-12-10",
        "item": null
    },
    {
        "y": "2014-12-11",
        "item": null
    },
    {
        "y": "2014-12-12",
        "item": null
    },
    {
        "y": "2014-12-13",
        "item": null
    },
    {
        "y": "2014-12-14",
        "item": null
    },
    {
        "y": "2014-12-15",
        "item": null
    },
    {
        "y": "2014-12-16",
        "item": null
    },
    {
        "y": "2014-12-17",
        "item": null
    },
    {
        "y": "2014-12-18",
        "item": null
    },
    {
        "y": "2014-12-19",
        "item": null
    },
    {
        "y": "2014-12-20",
        "item": null
    },
    {
        "y": "2014-12-21",
        "item": null
    },
    {
        "y": "2014-12-22",
        "item": null
    },
    {
        "y": "2014-12-23",
        "item": null
    },
    {
        "y": "2014-12-24",
        "item": null
    },
    {
        "y": "2014-12-25",
        "item": null
    },
    {
        "y": "2014-12-26",
        "item": null
    },
    {
        "y": "2014-12-27",
        "item": null
    },
    {
        "y": "2014-12-28",
        "item": null
    },
    {
        "y": "2014-12-29",
        "item": null
    },
    {
        "y": "2014-12-30",
        "item": null
    },
    {
        "y": "2014-12-31",
        "item": null
    }
]

傲雪星枫 2014-12-26

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y加上引號，這樣才不會有notice


<?php
$res = [['y'=>'2014-12-03','item'=>263],['y'=>'2014-12-04','item'=>168]];
echo json_encode($res, JSON_PRETTY_PRINT);
?>



[
    {
        "y": "2014-12-03",
        "item": 263
    },
    {
        "y": "2014-12-04",
        "item": 168
    }
]

飞凡的陀螺 2014-12-26

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进一步询问已知

$res = [[y=>'2014-12-03','item'=>263],[y=>'2014-12-04','item'=>168]];

让变成如下格式

[
            {y: '2014-12-01', item: null},
            {y: '2014-12-02', item: null},
            {y: '2014-12-03', item: 263},
            {y: '2014-12-04', item: 168},
            {y: '2014-12-05', item: null},
             .....
             {y: '2014-12-31', item1:null},
]