PHP由三个或多个值

Question

订购多维数组我有这样一个

array(
[0] => Array (
     [fullAddress] => 2482 Midvale St,Kettering, OH, 45420 
     [bedrooms] => 3 
     [bathrooms] => 1.0 
     [sqft] => 1548 
     [yearBuilt] => 1955 
     [lastSoldDate] => 12/09/2015 
     [lastSoldPrice] => 87,000 
     [distance] => 0.59 
     ) 
[1] => Array (
     [fullAddress] => 2828 Vale Dr, Dayton, OH, 45420 
     [bedrooms] => 3 
     [bathrooms] => 1.5 
     [sqft] => 1356 
     [yearBuilt] => 1956 
     [lastSoldDate] => 10/09/2015 
     [lastSoldPrice] => 117,500 
     [distance] => 0.38 
) 
[2] => Array (
     [fullAddress] => 2812 Vale Dr, Dayton, OH, 45420 
     [bedrooms] => 4 
     [bathrooms] => 2.0 
     [sqft] => 1248 
     [yearBuilt] => 1955 
     [lastSoldDate] => 05/13/2015 
     [lastSoldPrice] => 114,900 
     [distance] => 0.33 
) 
) 

数组我需要订购：距离递增，lastSoldPrice递减（最近的日期为当前日期），并在最后一个订单由相同的卧室，浴室和平方英尺20％以内。比较主要属性像这样的：

Array (
     [fullAddress] => 2400 Ghent Ave, Dayton, OH 45420 
     [bedrooms] => 3 
     [bathrooms] => 1.0 
     [sqft] => 984 
     [yearBuilt] => 1956 
     [lastSoldDate] => 05/06/2014 
     [lastSoldPrice] => 74,763 
) 

所以前两个订单准备和IM能够通过距离的顺序并使用usort（）lastsoldprice，但我还没有拿到最后一个尚未“因为我不知道如何与另一个数组（主要属性）进行比较。

这是我使用的是usort

function sort($a, $b) { 
    if ($a['distance']==$b['distance']) { 
     if ($a['lastSoldDate']==$b['lastSoldDate']) { 
      return 0; 
     } else { 
      return ($a['lastSoldDate']<$b['lastSoldDate']) ? 1 : -1; 
     } 
    } else { 
     return ($a['distance']>$b['distance']) ? 1 : -1; 
    } 
} 

usort($propertydata, 'sort'); 

的代码，我希望有人能够帮助我。谢谢

Answer 1

要做到这一点，你需要先按平方英尺排序，然后按距离和最后售出的价格排序。

像这样

function sort1($a, $b) { 
    if ($a['bedrooms']!=$b['bedrooms'] || $a['bathrooms']!=$b['bathrooms'] || $a['sqft']==$b['sqft']) { 
     return 0; 
    } else { 
     return (abs($a['sqft']-$b['sqft'])<$a['sqft']*.2) ? -1 : 1; 
    } 
} 


function sort2($a, $b) { 
    if ($a['distance']==$b['distance']) { 
     if ($a['lastSoldDate']==$b['lastSoldDate']) { 
      return 0; 
     } else { 
      return ($a['lastSoldDate']<$b['lastSoldDate']) ? 1 : -1; 
     } 
    } else { 
     return ($a['distance']>$b['distance']) ? 1 : -1; 
    } 
} 

usort($propertydata, 'sort1'); 
usort($propertydata, 'sort2');