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<?php $arr = array( array('N', 'N', 'Y', 'Y', 'Y', 'Y'), array('N', 'N', 'Y', 'Y', 'N', 'Y'), array('N', 'N', 'Y', 'Y', 'N', 'Y'), array('Y', 'Y', 'Y', 'Y', 'Y', 'Y'), ); $new = array(); $count = count($arr[0]); for ($i = 0; $i < $count; $i++) { $new[] = implode(',', array_column($arr, $i)); } print_r($new);

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33.86 ms | 406 KiB | 5 Q