<?php $arr1 = ['o' => 'vote', 'u' => 'true']; $arr2 = ['p' => '', 'v' => 'digit']; $merged = array_merge($arr1, $arr2); $key = null; foreach($merged as $k=>$v){ if($v !== false && empty($v)){ $key = $k; unset($merged[$k]); break; } } $merged[$key] = null; echo '<pre>'; print_r($merged);
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Value for `_results` contains invalid data `array`