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<?php $rows = [ ['id' => 21, 'text' => 't1', 'Mon' => 1], ['id' => 22, 'text' => 't2', 'Mon' => 0], ['id' => 23, 'text' => 't3', 'Mon' => 1], ]; $rowsResult = []; foreach($rows as $row){ if($row['Mon'] == 1){ $rowsResult []= $row; } } var_dump($rowsResult);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
array(2) { [0]=> array(3) { ["id"]=> int(21) ["text"]=> string(2) "t1" ["Mon"]=> int(1) } [1]=> array(3) { ["id"]=> int(23) ["text"]=> string(2) "t3" ["Mon"]=> int(1) } }

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