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<?php // This code works with PHP 7.4. // Older versions of PHP are counter-revolutionary. namespace stalin; function sort(array $xs): array { if (count($xs) <= 1) { return $xs; } $zs = $xs; $x = array_shift($zs); $y = array_shift($zs); if ($x <= $y) { return [$x, ...sort([$y, ...$zs])]; } return sort([$x, ...$zs]); } echo json_encode(sort([1, 2, 1, 1, 4, 3, 9]));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/g9bR2
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   25     0  E >   INIT_NS_FCALL_BY_NAME                                    'stalin%5Cjson_encode'
          1        INIT_NS_FCALL_BY_NAME                                    'stalin%5Csort'
          2        SEND_VAL_EX                                              <array>
          3        DO_FCALL                                      0  $0      
          4        SEND_VAR_NO_REF_EX                                       $0
          5        DO_FCALL                                      0  $1      
          6        ECHO                                                     $1
          7      > RETURN                                                   1

Function stalin%5Csort:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
2 jumps found. (Code = 43) Position 1 = 19, Position 2 = 28
Branch analysis from position: 19
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 28
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/g9bR2
function name:  stalin\sort
number of ops:  37
compiled vars:  !0 = $xs, !1 = $zs, !2 = $x, !3 = $y
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   RECV                                             !0      
   10     1        INIT_NS_FCALL_BY_NAME                                    'stalin%5Ccount'
          2        SEND_VAR_EX                                              !0
          3        DO_FCALL                                      0  $4      
          4        IS_SMALLER_OR_EQUAL                                      $4, 1
          5      > JMPZ                                                     ~5, ->8
   11     6    >   VERIFY_RETURN_TYPE                                       !0
          7      > RETURN                                                   !0
   14     8    >   ASSIGN                                                   !1, !0
   15     9        INIT_NS_FCALL_BY_NAME                                    'stalin%5Carray_shift'
         10        SEND_VAR_EX                                              !1
         11        DO_FCALL                                      0  $7      
         12        ASSIGN                                                   !2, $7
   16    13        INIT_NS_FCALL_BY_NAME                                    'stalin%5Carray_shift'
         14        SEND_VAR_EX                                              !1
         15        DO_FCALL                                      0  $9      
         16        ASSIGN                                                   !3, $9
   18    17        IS_SMALLER_OR_EQUAL                                      !2, !3
         18      > JMPZ                                                     ~11, ->28
   19    19    >   INIT_ARRAY                                       ~12     !2
         20        INIT_NS_FCALL_BY_NAME                                    'stalin%5Csort'
         21        INIT_ARRAY                                       ~13     !3
         22        ADD_ARRAY_UNPACK                                 ~13     !1
         23        SEND_VAL_EX                                              ~13
         24        DO_FCALL                                      0  $14     
         25        ADD_ARRAY_UNPACK                                 ~12     $14
         26        VERIFY_RETURN_TYPE                                       ~12
         27      > RETURN                                                   ~12
   22    28    >   INIT_NS_FCALL_BY_NAME                                    'stalin%5Csort'
         29        INIT_ARRAY                                       ~15     !2
         30        ADD_ARRAY_UNPACK                                 ~15     !1
         31        SEND_VAL_EX                                              ~15
         32        DO_FCALL                                      0  $16     
         33        VERIFY_RETURN_TYPE                                       $16
         34      > RETURN                                                   $16
   23    35*       VERIFY_RETURN_TYPE                                       
         36*     > RETURN                                                   null

End of function stalin%5Csort

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