Online PHP editor | refs for QjNg7

<?php $arr = [ ['a' => 'a', 'int' => 10], ['a' => 'foo', 'int' => 5], ['a' => 'bar', 'int' => 12] ]; usort($arr, function($a, $b) { return $a['int'] <=> $b['int']; }); var_export($arr); echo "\n---\n"; $arr = [ ['a' => 'a', 'int' => 10], ['a' => 'foo', 'int' => 5], ['a' => 'bar', 'int' => 12] ]; usort($arr, fn($a, $b) => $a['int'] <=> $b['int']); var_export($arr); echo "\n---\n"; $arr = [ ['a' => 'a', 'int' => 10], ['a' => 'foo', 'int' => 5], ['a' => 'bar', 'int' => 5] ]; usort($arr, fn($a, $b) => [$a['int'], $a['a']] <=> [$b['int'], $b['a']]); var_export($arr);