[英]Need to sort a group of array according to specific key value php
在排序具有不同组且每个组具有相同值的数组时,我需要帮助。 我想按降序对组进行排序。 请在下面看看:
Array
(
[0] => Array
(
[0] => Array
(
[name] => rose
[price] => 3
)
[1] => Array
(
[name] => daisy
[price] => 3
)
[2] => Array
(
[name] => orchid
[price] => 3
)
)
[1] => Array
(
[0] => Array
(
[name] => rose
[price] => 1
)
[1] => Array
(
[name] => daisy
[price] => 1
)
[2] => Array
(
[name] => orchid
[price] => 1
)
)
[2] => Array
(
[0] => Array
(
[name] => rose
[price] => 2
)
[1] => Array
(
[name] => daisy
[price] => 2
)
[2] => Array
(
[name] => orchid
[price] => 2
)
)
)
我希望它可以这样排序:
Array
(
[0] => Array
(
[0] => Array
(
[name] => rose
[price] => 3
)
[1] => Array
(
[name] => daisy
[price] => 3
)
[2] => Array
(
[name] => orchid
[price] => 3
)
)
[1] => Array
(
[0] => Array
(
[name] => rose
[price] => 2
)
[1] => Array
(
[name] => daisy
[price] => 2
)
[2] => Array
(
[name] => orchid
[price] => 2
)
)
[2] => Array
(
[0] => Array
(
[name] => rose
[price] => 1
)
[1] => Array
(
[name] => daisy
[price] => 1
)
[2] => Array
(
[name] => orchid
[price] => 1
)
)
)
注意我有很多的团体。 但这只是获得想法的一部分。
从上面可以理解,我希望上面的数组根据价格键以降序排序。
提前致谢!
试试看。
uasort($array, function ($a, $b) {
$price_a = array_values($a)[0]['price'];
$price_b = array_values($b)[0]['price'];
return $price_b - $price_a;
});
注意:如果组为空,则将出现错误。
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