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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("string comparison?"); comparevar("var2 and var3", $var2, $var3); comparevar("var3 and var2", $var3, $var2); comparevar("var2 and var4", $var2, $var4); comparevar("var4 and var2", $var4, $var2); comparevar("var3 and var4", $var3, $var4); comparevar("var4 and var3", $var4, $var3); 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
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/m4TaY
function name:  (null)
number of ops:  93
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
   14    11        INIT_FCALL_BY_NAME                                       'say'
         12        SEND_VAL_EX                                              'string+comparison%3F'
         13        DO_FCALL                                      0          
   15    14        INIT_FCALL_BY_NAME                                       'comparevar'
         15        SEND_VAL_EX                                              'var2+and+var3'
         16        SEND_VAR_EX                                              !1
         17        SEND_VAR_EX                                              !2
         18        DO_FCALL                                      0          
   16    19        INIT_FCALL_BY_NAME                                       'comparevar'
         20        SEND_VAL_EX                                              'var3+and+var2'
         21        SEND_VAR_EX                                              !2
         22        SEND_VAR_EX                                              !1
         23        DO_FCALL                                      0          
   17    24        INIT_FCALL_BY_NAME                                       'comparevar'
         25        SEND_VAL_EX                                              'var2+and+var4'
         26        SEND_VAR_EX                                              !1
         27        SEND_VAR_EX                                              !3
         28        DO_FCALL                                      0          
   18    29        INIT_FCALL_BY_NAME                                       'comparevar'
         30        SEND_VAL_EX                                              'var4+and+var2'
         31        SEND_VAR_EX                                              !3
         32        SEND_VAR_EX                                              !1
         33        DO_FCALL                                      0          
   19    34        INIT_FCALL_BY_NAME                                       'comparevar'
         35        SEND_VAL_EX                                              'var3+and+var4'
         36        SEND_VAR_EX                                              !2
         37        SEND_VAR_EX                                              !3
         38        DO_FCALL                                      0          
   20    39        INIT_FCALL_BY_NAME                                       'comparevar'
         40        SEND_VAL_EX                                              'var4+and+var3'
         41        SEND_VAR_EX                                              !3
         42        SEND_VAR_EX                                              !2
         43        DO_FCALL                                      0          
   21    44        INIT_FCALL_BY_NAME                                       'say'
         45        SEND_VAL_EX                                              'end+weird+bit'
         46        DO_FCALL                                      0          
   23    47        INIT_FCALL_BY_NAME                                       'comparevar'
         48        SEND_VAL_EX                                              'var1+and+var2'
         49        SEND_VAR_EX                                              !0
         50        SEND_VAR_EX                                              !1
         51        DO_FCALL                                      0          
   25    52        INIT_FCALL_BY_NAME                                       'comparevar'
         53        SEND_VAL_EX                                              'var3+and+var1'
         54        SEND_VAR_EX                                              !2
         55        SEND_VAR_EX                                              !0
         56        DO_FCALL                                      0          
   26    57        INIT_FCALL_BY_NAME                                       'comparevar'
         58        SEND_VAL_EX                                              'var2+and+var1'
         59        SEND_VAR_EX                                              !1
         60        SEND_VAR_EX                                              !0
         61        DO_FCALL                                      0          
   28    62        INIT_FCALL_BY_NAME                                       'comparevar'
         63        SEND_VAL_EX                                              'var4+and+var5'
         64        SEND_VAR_EX                                              !3
         65        SEND_VAR_EX                                              !4
         66        DO_FCALL                                      0          
   29    67        INIT_FCALL_BY_NAME                                       'comparevar'
         68        SEND_VAL_EX                                              'var5+and+var6'
         69        SEND_VAR_EX                                              !4
         70        SEND_VAR_EX                                              !5
         71        DO_FCALL                                      0          
   30    72        INIT_FCALL_BY_NAME                                       'comparevar'
         73        SEND_VAL_EX                                              'var6+and+var7'
         74        SEND_VAR_EX                                              !5
         75        SEND_VAR_EX                                              !6
         76        DO_FCALL                                      0          
   32    77        INIT_FCALL_BY_NAME                                       'comparevar'
         78        SEND_VAL_EX                                              'var2+and+var4'
         79        SEND_VAR_EX                                              !1
         80        SEND_VAR_EX                                              !3
         81        DO_FCALL                                      0          
   34    82        INIT_FCALL_BY_NAME                                       'comparevar'
         83        SEND_VAL_EX                                              'var2+and+var5'
         84        SEND_VAR_EX                                              !1
         85        SEND_VAR_EX                                              !4
         86        DO_FCALL                                      0          
   35    87        INIT_FCALL_BY_NAME                                       'comparevar'
         88        SEND_VAL_EX                                              'var2+and+var6'
         89        SEND_VAR_EX                                              !1
         90        SEND_VAR_EX                                              !5
         91        DO_FCALL                                      0          
   46    92      > 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/m4TaY
function name:  comparevar
number of ops:  39
compiled vars:  !0 = $tag, !1 = $arg1, !2 = $arg2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   37     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        RECV                                             !2      
   39     3        NOP                                                      
          4        FAST_CONCAT                                      ~3      !0, '%3A+'
          5        ECHO                                                     ~3
   40     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          
   41    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          
   42    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          
   43    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          
   44    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/m4TaY
function name:  say
number of ops:  4
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   46     0  E >   RECV                                             !0      
          1        ECHO                                                     !0
          2        ECHO                                                     '%0A'
          3      > RETURN                                                   null

End of function say

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