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<?php $arr1 = ['o' => 'vote', 'u' => 'true']; $arr2 = ['p' => '', 'v' => 'digit']; $merged = array_merge($arr1, $arr2); usort($merged, function($v1, $v2){ if($v1 !== false && empty($v1)){ return 1; }elseif($v2 !== false && empty($v2)){ return -1; }else{ return 0; } }); echo '<pre>'; print_r($merged); ?>
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
<pre>Array ( [0] => vote [1] => true [2] => digit [3] => )
preferences:
99.35 ms | 1462 KiB | 4 Q