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<?php $var1 = '123'; $var2 = '456A'; $var3 = '78'; $var4 = (int) $var2; $var5 = (float) $var2; $var6 = $var2 + 0; $var7 = 0 + $var2; # the weird bit: say("start weird bit"); say("string comparison?"); comparevar("var2 and var3", $var2, $var3); comparevar("var3 and var2", $var3, $var2); say("number comarison?"); comparevar("var3 and var4", $var3, $var4); comparevar("var4 and var3", $var4, $var3); comparevar("var2 and var4", $var2, $var4); comparevar("var4 and var2", $var4, $var2); if (($var2 < $var3) and ($var4 > $var3) and ($var2 == $var4)) { say("($var2 < $var3) and ($var4 > $var3) and ($var2 == $var4)"); say("is this a bug?"); } say("end weird bit"); comparevar("var1 and var2", $var1, $var2); comparevar("var3 and var1", $var3, $var1); comparevar("var2 and var1", $var2, $var1); comparevar("var4 and var5", $var4, $var5); comparevar("var5 and var6", $var5, $var6); comparevar("var6 and var7", $var6, $var7); comparevar("var2 and var4", $var2, $var4); comparevar("var2 and var5", $var2, $var5); comparevar("var2 and var6", $var2, $var6); function comparevar($tag, $arg1, $arg2) { echo("$tag: "); if ($arg1 === $arg2) { say("$arg1 === $arg2"); } if ($arg1 == $arg2) { say("$arg1 == $arg2"); } if ($arg1 < $arg2) { say("$arg1 < $arg2"); } if ($arg1 > $arg2) { say("$arg1 > $arg2"); } } function say($str) { echo $str, "\n"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 46) Position 1 = 52, Position 2 = 54
Branch analysis from position: 52
2 jumps found. (Code = 46) Position 1 = 55, Position 2 = 57
Branch analysis from position: 55
2 jumps found. (Code = 43) Position 1 = 58, Position 2 = 77
Branch analysis from position: 58
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 77
Branch analysis from position: 57
Branch analysis from position: 54
filename:       /in/90eRn
function name:  (null)
number of ops:  126
compiled vars:  !0 = $var1, !1 = $var2, !2 = $var3, !3 = $var4, !4 = $var5, !5 = $var6, !6 = $var7
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '123'
    4     1        ASSIGN                                                   !1, '456A'
    5     2        ASSIGN                                                   !2, '78'
    6     3        CAST                                          4  ~10     !1
          4        ASSIGN                                                   !3, ~10
    7     5        CAST                                          5  ~12     !1
          6        ASSIGN                                                   !4, ~12
    8     7        ADD                                              ~14     !1, 0
          8        ASSIGN                                                   !5, ~14
    9     9        ADD                                              ~16     0, !1
         10        ASSIGN                                                   !6, ~16
   13    11        INIT_FCALL_BY_NAME                                       'say'
         12        SEND_VAL_EX                                              'start+weird+bit'
         13        DO_FCALL                                      0          
   14    14        INIT_FCALL_BY_NAME                                       'say'
         15        SEND_VAL_EX                                              'string+comparison%3F'
         16        DO_FCALL                                      0          
   15    17        INIT_FCALL_BY_NAME                                       'comparevar'
         18        SEND_VAL_EX                                              'var2+and+var3'
         19        SEND_VAR_EX                                              !1
         20        SEND_VAR_EX                                              !2
         21        DO_FCALL                                      0          
   16    22        INIT_FCALL_BY_NAME                                       'comparevar'
         23        SEND_VAL_EX                                              'var3+and+var2'
         24        SEND_VAR_EX                                              !2
         25        SEND_VAR_EX                                              !1
         26        DO_FCALL                                      0          
   18    27        INIT_FCALL_BY_NAME                                       'say'
         28        SEND_VAL_EX                                              'number+comarison%3F'
         29        DO_FCALL                                      0          
   19    30        INIT_FCALL_BY_NAME                                       'comparevar'
         31        SEND_VAL_EX                                              'var3+and+var4'
         32        SEND_VAR_EX                                              !2
         33        SEND_VAR_EX                                              !3
         34        DO_FCALL                                      0          
   20    35        INIT_FCALL_BY_NAME                                       'comparevar'
         36        SEND_VAL_EX                                              'var4+and+var3'
         37        SEND_VAR_EX                                              !3
         38        SEND_VAR_EX                                              !2
         39        DO_FCALL                                      0          
   22    40        INIT_FCALL_BY_NAME                                       'comparevar'
         41        SEND_VAL_EX                                              'var2+and+var4'
         42        SEND_VAR_EX                                              !1
         43        SEND_VAR_EX                                              !3
         44        DO_FCALL                                      0          
   23    45        INIT_FCALL_BY_NAME                                       'comparevar'
         46        SEND_VAL_EX                                              'var4+and+var2'
         47        SEND_VAR_EX                                              !3
         48        SEND_VAR_EX                                              !1
         49        DO_FCALL                                      0          
   26    50        IS_SMALLER                                       ~27     !1, !2
         51      > JMPZ_EX                                          ~27     ~27, ->54
         52    >   IS_SMALLER                                       ~28     !2, !3
         53        BOOL                                             ~27     ~28
         54    > > JMPZ_EX                                          ~27     ~27, ->57
         55    >   IS_EQUAL                                         ~29     !1, !3
         56        BOOL                                             ~27     ~29
         57    > > JMPZ                                                     ~27, ->77
   28    58    >   INIT_FCALL_BY_NAME                                       'say'
         59        ROPE_INIT                                    13  ~31     '%28'
         60        ROPE_ADD                                      1  ~31     ~31, !1
         61        ROPE_ADD                                      2  ~31     ~31, '+%3C+'
         62        ROPE_ADD                                      3  ~31     ~31, !2
         63        ROPE_ADD                                      4  ~31     ~31, '%29+and+%28'
         64        ROPE_ADD                                      5  ~31     ~31, !3
         65        ROPE_ADD                                      6  ~31     ~31, '+%3E+'
         66        ROPE_ADD                                      7  ~31     ~31, !2
         67        ROPE_ADD                                      8  ~31     ~31, '%29+and+%28'
         68        ROPE_ADD                                      9  ~31     ~31, !1
         69        ROPE_ADD                                     10  ~31     ~31, '+%3D%3D+'
         70        ROPE_ADD                                     11  ~31     ~31, !3
         71        ROPE_END                                     12  ~30     ~31, '%29'
         72        SEND_VAL_EX                                              ~30
         73        DO_FCALL                                      0          
   29    74        INIT_FCALL_BY_NAME                                       'say'
         75        SEND_VAL_EX                                              'is+this+a+bug%3F'
         76        DO_FCALL                                      0          
   31    77    >   INIT_FCALL_BY_NAME                                       'say'
         78        SEND_VAL_EX                                              'end+weird+bit'
         79        DO_FCALL                                      0          
   33    80        INIT_FCALL_BY_NAME                                       'comparevar'
         81        SEND_VAL_EX                                              'var1+and+var2'
         82        SEND_VAR_EX                                              !0
         83        SEND_VAR_EX                                              !1
         84        DO_FCALL                                      0          
   35    85        INIT_FCALL_BY_NAME                                       'comparevar'
         86        SEND_VAL_EX                                              'var3+and+var1'
         87        SEND_VAR_EX                                              !2
         88        SEND_VAR_EX                                              !0
         89        DO_FCALL                                      0          
   36    90        INIT_FCALL_BY_NAME                                       'comparevar'
         91        SEND_VAL_EX                                              'var2+and+var1'
         92        SEND_VAR_EX                                              !1
         93        SEND_VAR_EX                                              !0
         94        DO_FCALL                                      0          
   38    95        INIT_FCALL_BY_NAME                                       'comparevar'
         96        SEND_VAL_EX                                              'var4+and+var5'
         97        SEND_VAR_EX                                              !3
         98        SEND_VAR_EX                                              !4
         99        DO_FCALL                                      0          
   39   100        INIT_FCALL_BY_NAME                                       'comparevar'
        101        SEND_VAL_EX                                              'var5+and+var6'
        102        SEND_VAR_EX                                              !4
        103        SEND_VAR_EX                                              !5
        104        DO_FCALL                                      0          
   40   105        INIT_FCALL_BY_NAME                                       'comparevar'
        106        SEND_VAL_EX                                              'var6+and+var7'
        107        SEND_VAR_EX                                              !5
        108        SEND_VAR_EX                                              !6
        109        DO_FCALL                                      0          
   42   110        INIT_FCALL_BY_NAME                                       'comparevar'
        111        SEND_VAL_EX                                              'var2+and+var4'
        112        SEND_VAR_EX                                              !1
        113        SEND_VAR_EX                                              !3
        114        DO_FCALL                                      0          
   44   115        INIT_FCALL_BY_NAME                                       'comparevar'
        116        SEND_VAL_EX                                              'var2+and+var5'
        117        SEND_VAR_EX                                              !1
        118        SEND_VAR_EX                                              !4
        119        DO_FCALL                                      0          
   45   120        INIT_FCALL_BY_NAME                                       'comparevar'
        121        SEND_VAL_EX                                              'var2+and+var6'
        122        SEND_VAR_EX                                              !1
        123        SEND_VAR_EX                                              !5
        124        DO_FCALL                                      0          
   56   125      > RETURN                                                   1

Function comparevar:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 8, Position 2 = 14
Branch analysis from position: 8
2 jumps found. (Code = 43) Position 1 = 16, Position 2 = 22
Branch analysis from position: 16
2 jumps found. (Code = 43) Position 1 = 24, Position 2 = 30
Branch analysis from position: 24
2 jumps found. (Code = 43) Position 1 = 32, Position 2 = 38
Branch analysis from position: 32
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 38
Branch analysis from position: 30
Branch analysis from position: 22
Branch analysis from position: 14
filename:       /in/90eRn
function name:  comparevar
number of ops:  39
compiled vars:  !0 = $tag, !1 = $arg1, !2 = $arg2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   47     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        RECV                                             !2      
   49     3        NOP                                                      
          4        FAST_CONCAT                                      ~3      !0, '%3A+'
          5        ECHO                                                     ~3
   50     6        IS_IDENTICAL                                             !1, !2
          7      > JMPZ                                                     ~4, ->14
          8    >   INIT_FCALL_BY_NAME                                       'say'
          9        ROPE_INIT                                     3  ~6      !1
         10        ROPE_ADD                                      1  ~6      ~6, '+%3D%3D%3D+'
         11        ROPE_END                                      2  ~5      ~6, !2
         12        SEND_VAL_EX                                              ~5
         13        DO_FCALL                                      0          
   51    14    >   IS_EQUAL                                                 !1, !2
         15      > JMPZ                                                     ~9, ->22
         16    >   INIT_FCALL_BY_NAME                                       'say'
         17        ROPE_INIT                                     3  ~11     !1
         18        ROPE_ADD                                      1  ~11     ~11, '+%3D%3D+'
         19        ROPE_END                                      2  ~10     ~11, !2
         20        SEND_VAL_EX                                              ~10
         21        DO_FCALL                                      0          
   52    22    >   IS_SMALLER                                               !1, !2
         23      > JMPZ                                                     ~14, ->30
         24    >   INIT_FCALL_BY_NAME                                       'say'
         25        ROPE_INIT                                     3  ~16     !1
         26        ROPE_ADD                                      1  ~16     ~16, '+%3C+'
         27        ROPE_END                                      2  ~15     ~16, !2
         28        SEND_VAL_EX                                              ~15
         29        DO_FCALL                                      0          
   53    30    >   IS_SMALLER                                               !2, !1
         31      > JMPZ                                                     ~19, ->38
         32    >   INIT_FCALL_BY_NAME                                       'say'
         33        ROPE_INIT                                     3  ~21     !1
         34        ROPE_ADD                                      1  ~21     ~21, '+%3E+'
         35        ROPE_END                                      2  ~20     ~21, !2
         36        SEND_VAL_EX                                              ~20
         37        DO_FCALL                                      0          
   54    38    > > RETURN                                                   null

End of function comparevar

Function say:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/90eRn
function name:  say
number of ops:  4
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   56     0  E >   RECV                                             !0      
          1        ECHO                                                     !0
          2        ECHO                                                     '%0A'
          3      > RETURN                                                   null

End of function say

Generated using Vulcan Logic Dumper, using php 8.0.0


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