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<?php $f=fn($a,$f)=>$a?[...array_shift($a),...$f(array_reverse($a?next($a)?array_map(null,...$a):array_chunk($a[0],1):$a),$f)]:$a; print_r( $f([[1, 2, 3, 4], [12, 13, 14, 5], [11, 16, 15, 6], [10, 9, 8, 7]], $f) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/JDGfH
function name:  (null)
number of ops:  10
compiled vars:  !0 = $f
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FJDGfH%3A3%240'
          1        ASSIGN                                                   !0, ~1
    5     2        INIT_FCALL                                               'print_r'
    6     3        INIT_DYNAMIC_CALL                                        !0
          4        SEND_VAL_EX                                              <array>
          5        SEND_VAR_EX                                              !0
          6        DO_FCALL                                      0  $3      
          7        SEND_VAR                                                 $3
          8        DO_ICALL                                                 
    7     9      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FJDGfH%3A3%240:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 39
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 11, Position 2 = 30
Branch analysis from position: 11
2 jumps found. (Code = 43) Position 1 = 15, Position 2 = 22
Branch analysis from position: 15
1 jumps found. (Code = 42) Position 1 = 28
Branch analysis from position: 28
1 jumps found. (Code = 42) Position 1 = 31
Branch analysis from position: 31
1 jumps found. (Code = 42) Position 1 = 40
Branch analysis from position: 40
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 22
1 jumps found. (Code = 42) Position 1 = 31
Branch analysis from position: 31
Branch analysis from position: 30
1 jumps found. (Code = 42) Position 1 = 40
Branch analysis from position: 40
Branch analysis from position: 39
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/JDGfH
function name:  {closure}
number of ops:  42
compiled vars:  !0 = $a, !1 = $f
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2      > JMPZ                                                     !0, ->39
          3    >   INIT_FCALL                                               'array_shift'
          4        SEND_REF                                                 !0
          5        DO_ICALL                                         $2      
          6        INIT_ARRAY                                       ~3      
          7        ADD_ARRAY_UNPACK                                 ~3      $2
          8        INIT_DYNAMIC_CALL                                        !1
          9        INIT_FCALL                                               'array_reverse'
         10      > JMPZ                                                     !0, ->30
         11    >   INIT_FCALL                                               'next'
         12        SEND_REF                                                 !0
         13        DO_ICALL                                         $4      
         14      > JMPZ                                                     $4, ->22
         15    >   INIT_FCALL                                               'array_map'
         16        SEND_VAL                                                 null
         17        SEND_UNPACK                                              !0
         18        CHECK_UNDEF_ARGS                                         
         19        DO_ICALL                                         $5      
         20        QM_ASSIGN                                        ~6      $5
         21      > JMP                                                      ->28
         22    >   INIT_FCALL                                               'array_chunk'
         23        FETCH_DIM_R                                      ~7      !0, 0
         24        SEND_VAL                                                 ~7
         25        SEND_VAL                                                 1
         26        DO_ICALL                                         $8      
         27        QM_ASSIGN                                        ~6      $8
         28    >   QM_ASSIGN                                        ~9      ~6
         29      > JMP                                                      ->31
         30    >   QM_ASSIGN                                        ~9      !0
         31    >   SEND_VAL                                                 ~9
         32        DO_ICALL                                         $10     
         33        SEND_VAR_NO_REF_EX                                       $10
         34        SEND_VAR_EX                                              !1
         35        DO_FCALL                                      0  $11     
         36        ADD_ARRAY_UNPACK                                 ~3      $11
         37        QM_ASSIGN                                        ~12     ~3
         38      > JMP                                                      ->40
         39    >   QM_ASSIGN                                        ~12     !0
         40    > > RETURN                                                   ~12
         41*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FJDGfH%3A3%240

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
170.89 ms | 945 KiB | 26 Q