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<?php $s = array(NAN, 0, "0 ",1, "1 "); foreach($s as $y){foreach($s as $x){printf("%2d", $x <=> $y);}echo "\n";}
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 14
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 14
Branch analysis from position: 3
2 jumps found. (Code = 77) Position 1 = 4, Position 2 = 11
Branch analysis from position: 4
2 jumps found. (Code = 78) Position 1 = 5, Position 2 = 11
Branch analysis from position: 5
1 jumps found. (Code = 42) Position 1 = 4
Branch analysis from position: 4
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 11
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
filename:       /in/SW4Zf
function name:  (null)
number of ops:  16
compiled vars:  !0 = $s, !1 = $y, !2 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1      > FE_RESET_R                                       $4      !0, ->14
          2    > > FE_FETCH_R                                               $4, !1, ->14
          3    > > FE_RESET_R                                       $5      !0, ->11
          4    > > FE_FETCH_R                                               $5, !2, ->11
          5    >   INIT_FCALL                                               'printf'
          6        SEND_VAL                                                 '%252d'
          7        SPACESHIP                                        ~6      !2, !1
          8        SEND_VAL                                                 ~6
          9        DO_ICALL                                                 
         10      > JMP                                                      ->4
         11    >   FE_FREE                                                  $5
         12        ECHO                                                     '%0A'
         13      > JMP                                                      ->2
         14    >   FE_FREE                                                  $4
         15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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176.84 ms | 1399 KiB | 15 Q