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<?php $all = array( array( 'titulo' => 'Nome 1', 'itens' => array( 'item1', 'item2', 'item3') ), array( 'titulo' => 'Nome 2', 'itens' => array( 'item4', 'item5', 'item6') ), array( 'titulo' => 'Nome 4', 'itens' => array( 'item7', 'item8', 'item9') )); $result = []; foreach ($all as $row) { array_push($result, ...$row['itens']); } var_export($result);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => 'item1', 1 => 'item2', 2 => 'item3', 3 => 'item4', 4 => 'item5', 5 => 'item6', 6 => 'item7', 7 => 'item8', 8 => 'item9', )

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