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<?php function double_chunk($array, $maxrows) { $size = sizeof($array); $columns = ceil($size / $maxrows); $fullrows = $size - ($columns - 1) * $maxrows; if ($fullrows == $maxrows) { return array_chunk($array, $fullrows); // all columns have full rows, don't splice } return array_merge( array_chunk( array_splice($array, 0, $columns * $fullrows), $columns ), array_chunk($array, $columns - 1) ); } var_export(double_chunk(range('a', 'i'), 3));
based on aAeYi
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/k9e6Y
function name:  (null)
number of ops:  12
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
  18     0  E >   INIT_FCALL                                               'var_export'
         1        INIT_FCALL                                               'double_chunk'
         2        INIT_FCALL                                               'range'
         3        SEND_VAL                                                 'a'
         4        SEND_VAL                                                 'i'
         5        DO_ICALL                                         $0      
         6        SEND_VAR                                                 $0
         7        SEND_VAL                                                 3
         8        DO_FCALL                                      0  $1      
         9        SEND_VAR                                                 $1
        10        DO_ICALL                                                 
        11      > RETURN                                                   1

Function double_chunk:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 15, Position 2 = 20
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 20
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/k9e6Y
function name:  double_chunk
number of ops:  41
compiled vars:  !0 = $array, !1 = $maxrows, !2 = $size, !3 = $columns, !4 = $fullrows
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   RECV                                             !0      
         1        RECV                                             !1      
   3     2        COUNT                                            ~5      !0
         3        QM_ASSIGN                                                !2
   4     4        INIT_FCALL                                               'ceil'
         5        DIV                                              ~7      !2, !1
         6        SEND_VAL                                                 ~7
         7        DO_ICALL                                         $8      
         8        QM_ASSIGN                                                !3
   5     9        SUB                                              ~10     !3, 1
        10        MUL                                              ~11     !1, ~10
        11        SUB                                              ~12     !2, ~11
        12        QM_ASSIGN                                                !4
   7    13        IS_NOT_EQUAL                                     ~14     !4, !1
        14      > JMPZ                                                     ~14, ->20
   8    15    >   INIT_FCALL                                               'array_chunk'
        16        SEND_VAR                                                 !0
        17        SEND_VAR                                                 !4
        18        DO_ICALL                                         $15     
        19      > RETURN                                                   $15
  10    20    >   INIT_FCALL                                               'array_merge'
  11    21        INIT_FCALL                                               'array_chunk'
  12    22        INIT_FCALL                                               'array_splice'
        23        SEND_REF                                                 !0
        24        SEND_VAL                                                 0
        25        MUL                                              ~16     !3, !4
        26        SEND_VAL                                                 ~16
        27        DO_ICALL                                         $17     
        28        SEND_VAR                                                 $17
  13    29        SEND_VAR                                                 !3
        30        DO_ICALL                                         $18     
        31        SEND_VAR                                                 $18
  15    32        INIT_FCALL                                               'array_chunk'
        33        SEND_VAR                                                 !0
        34        SUB                                              ~19     !3, 1
        35        SEND_VAL                                                 ~19
        36        DO_ICALL                                         $20     
        37        SEND_VAR                                                 $20
        38        DO_ICALL                                         $21     
        39      > RETURN                                                   $21
  17    40*     > RETURN                                                   null

End of function double_chunk

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