How to sort a two-dimensional array by a certain key value in PHP

In practical applications, sometimes we encounter the need for specific sorting of two-dimensional arrays. How should we deal with this? Let’s take a look at the article’s examples!

$arr=[ array( 'name'=>'小坏龙', 'age'=>28 ), array( 'name'=>'小坏龙2', 'age'=>14 ), array( 'name'=>'小坏龙3', 'age'=>59 ), array( 'name'=>'小坏龙4', 'age'=>23 ), array( 'name'=>'小坏龙5', 'age'=>23 ), array( 'name'=>'小坏龙6', 'age'=>21 ), ]; array_multisort(array_column($arr,'age'),SORT_DESC,$arr); print_r($arr);

where array_column (array, a key value in the array) takes out a column of a key value from a multi-dimensional array and returns a one-dimensional array;

array_multisort (Array (one-dimensional array), sorting method (SOTR_ASC, SOTR_DESC), other arrays (can be two-dimensional))

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