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<?php function cmp($a, $b) { if ($a == $b) { return 0; } echo "a".$a."b".$b."\n"; return ($a > $b) ? -1 : 1; } $a = array(3, 2, 5, 6, 1); usort($a, "cmp"); foreach ($a as $key => $value) { echo "$key: $value\n"; } $b = $a; sort($b); echo "B:\n"; foreach ($a as $key => $value) { echo "$key: $value\n"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 6, Position 2 = 14
Branch analysis from position: 6
2 jumps found. (Code = 78) Position 1 = 7, Position 2 = 14
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
Branch analysis from position: 14
2 jumps found. (Code = 77) Position 1 = 21, Position 2 = 29
Branch analysis from position: 21
2 jumps found. (Code = 78) Position 1 = 22, Position 2 = 29
Branch analysis from position: 22
1 jumps found. (Code = 42) Position 1 = 21
Branch analysis from position: 21
Branch analysis from position: 29
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 29
Branch analysis from position: 14
filename:       /in/IDq5b
function name:  (null)
number of ops:  31
compiled vars:  !0 = $a, !1 = $value, !2 = $key, !3 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   13     0  E >   ASSIGN                                                   !0, <array>
   15     1        INIT_FCALL                                               'usort'
          2        SEND_REF                                                 !0
          3        SEND_VAL                                                 'cmp'
          4        DO_ICALL                                                 
   17     5      > FE_RESET_R                                       $6      !0, ->14
          6    > > FE_FETCH_R                                       ~7      $6, !1, ->14
          7    >   ASSIGN                                                   !2, ~7
   18     8        ROPE_INIT                                     4  ~10     !2
          9        ROPE_ADD                                      1  ~10     ~10, '%3A+'
         10        ROPE_ADD                                      2  ~10     ~10, !1
         11        ROPE_END                                      3  ~9      ~10, '%0A'
         12        ECHO                                                     ~9
   17    13      > JMP                                                      ->6
         14    >   FE_FREE                                                  $6
   23    15        ASSIGN                                                   !3, !0
   24    16        INIT_FCALL                                               'sort'
         17        SEND_REF                                                 !3
         18        DO_ICALL                                                 
   25    19        ECHO                                                     'B%3A%0A'
   26    20      > FE_RESET_R                                       $14     !0, ->29
         21    > > FE_FETCH_R                                       ~15     $14, !1, ->29
         22    >   ASSIGN                                                   !2, ~15
   27    23        ROPE_INIT                                     4  ~18     !2
         24        ROPE_ADD                                      1  ~18     ~18, '%3A+'
         25        ROPE_ADD                                      2  ~18     ~18, !1
         26        ROPE_END                                      3  ~17     ~18, '%0A'
         27        ECHO                                                     ~17
   26    28      > JMP                                                      ->21
         29    >   FE_FREE                                                  $14
   28    30      > RETURN                                                   1

Function cmp:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
2 jumps found. (Code = 43) Position 1 = 12, Position 2 = 14
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 15
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/IDq5b
function name:  cmp
number of ops:  17
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    5     2        IS_EQUAL                                                 !0, !1
          3      > JMPZ                                                     ~2, ->5
    6     4    > > RETURN                                                   0
    9     5    >   CONCAT                                           ~3      'a', !0
          6        CONCAT                                           ~4      ~3, 'b'
          7        CONCAT                                           ~5      ~4, !1
          8        CONCAT                                           ~6      ~5, '%0A'
          9        ECHO                                                     ~6
   10    10        IS_SMALLER                                               !1, !0
         11      > JMPZ                                                     ~7, ->14
         12    >   QM_ASSIGN                                        ~8      -1
         13      > JMP                                                      ->15
         14    >   QM_ASSIGN                                        ~8      1
         15    > > RETURN                                                   ~8
   11    16*     > RETURN                                                   null

End of function cmp

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
180.14 ms | 1400 KiB | 17 Q