PHP method to sort a two-dimensional array by specified key value, _PHP tutorial

PHP’s method of sorting two-dimensional arrays by specified key values,

The example in this article describes the method of PHP sorting two-dimensional arrays by specified key values. Share it with everyone for your reference, the details are as follows:

Question:

There is an array: Copy code The code is as follows: array(0=>array('id'=>1,'price'=>50),1= >array('id'=>2,'price'=>60));
It is required to sort based on the price field of the array.

The implementation code is as follows:

<&#63;php 
$array[] = array('id'=>1,'price'=>50);
$array[] = array('id'=>2,'price'=>70);
$array[] = array('id'=>3,'price'=>30);
$array[] = array('id'=>4,'price'=>20);
foreach ($array as $key=>$value){
  $id[$key] = $value['id'];
  $price[$key] = $value['price'];
}
array_multisort($price,SORT_NUMERIC,SORT_DESC,$id,SORT_STRING,SORT_ASC,$array);
echo '<pre class="brush:php;toolbar:false">';
print_r($array);
echo '

'; ?>

Run result:

Array
(
[0] => Array
(
[id] => 2
[price] => 70
)
[1] => Array
(
[id] => 1
[price] => 50
)
[2] => Array
(
[id] => 3
[price] => 30
)
[3] => Array
(
[id] => 4
[price] => 20
)
)

I hope this article will be helpful to everyone in PHP programming.

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