PHP 2D array rectangular transpose

<? PHP  //  2d array transpose // define a 2D Array      $ Arr = Array ( Array (1, 2, 3 ), Array (4,5, 6 ));  //  Define an array to place transposed data      $ Arr1 = Array  ();  //  Traversal before transpose     Echo "Before transpose: <br/>" ;  For ( $ I = 0; $ I < Count ( $ Arr ); $ I ++ ){  For ( $ J = 0; $ J < Count ( $ Arr [$ I ]); $ J ++ ){  Echo   $ Arr [ $ I ] [ $ J  ];}  Echo "<Br/>" ;}  Echo "Before and After transpose: <br/>" ;  // Determine the number of lines after the device      For ($ J = 0; $ J < Count ( $ Arr [0]); $ J ++ ){  $ Arr1 [ $ J ] = Array  ();}  For ( $ I = 0; $ I < Count ($ Arr ); $ I ++ ){  For ( $ J = 0; $ J < Count ( $ Arr [ $ I ]); $ J ++ ){  $ Arr1 [ $ J ] [ $ I ] =$ Arr [ $ I ] [ $ J  ];  //  Echo $ arr;  }}  //  Transpose traversal:      For ( $ K = 0; $ K < Count ( $ Arr1 ); $ K ++){  For ( $ L = 0; $ L < Count ( $ Arr1 [ $ K ]); $ L ++ ){  Echo   $ Arr1 [ $ K ] [ $ L  ];} Echo "<Br/>" ;} ?>