Online PHP editor | refs for jufbu

<?php $arr = [ 0 => [23, 890], 1 => [56, 401], 2 => [56, 491], 3 => [98, 840], 4 => [56, 821], 5 => [98, 401], 6 => [23, 875], ]; uasort($arr, function ($a, $b) { if( $a[0] != $b[0] ) return $a[0] - $b[0]; else if( strval($a[1])[1] == 9 ) return 1; else return $a[1] - $b[1]; }); print_r($arr);