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<?php $rows = [ ['id' => 1, 'code' => '342'], ['id' => 2, 'code' => '765'], ['id' => 3, 'code' => '134'], ['id' => 1, 'code' => '999'] ]; var_export( array_values(array_column($rows, null, 'id')) );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => array ( 'id' => 1, 'code' => '999', ), 1 => array ( 'id' => 2, 'code' => '765', ), 2 => array ( 'id' => 3, 'code' => '134', ), )

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