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<?php /** * Sum byte values from position x in $str **/ function sum( $str, $x ) { $sum = 0; for ( $max = strlen( $str ); $x < $max; ++$x ) { $sum += ord( $str[ $x ] ); } return $sum; } $str = 'Hello, Dolly'; echo sum($str, strpos( $str, 'D')); //
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/jfltO
function name:  (null)
number of ops:  11
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   17     0  E >   ASSIGN                                                   !0, 'Hello%2C+Dolly'
   18     1        INIT_FCALL                                               'sum'
          2        SEND_VAR                                                 !0
          3        INIT_FCALL                                               'strpos'
          4        SEND_VAR                                                 !0
          5        SEND_VAL                                                 'D'
          6        DO_ICALL                                         $2      
          7        SEND_VAR                                                 $2
          8        DO_FCALL                                      0  $3      
          9        ECHO                                                     $3
         10      > RETURN                                                   1

Function sum:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 12
Branch analysis from position: 12
2 jumps found. (Code = 44) Position 1 = 14, Position 2 = 6
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
2 jumps found. (Code = 44) Position 1 = 14, Position 2 = 6
Branch analysis from position: 14
Branch analysis from position: 6
filename:       /in/jfltO
function name:  sum
number of ops:  16
compiled vars:  !0 = $str, !1 = $x, !2 = $sum, !3 = $max
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    7     2        ASSIGN                                                   !2, 0
    8     3        STRLEN                                           ~5      !0
          4        ASSIGN                                                   !3, ~5
          5      > JMP                                                      ->12
   12     6    >   INIT_FCALL                                               'ord'
          7        FETCH_DIM_R                                      ~7      !0, !1
          8        SEND_VAL                                                 ~7
          9        DO_ICALL                                         $8      
         10        ASSIGN_OP                                     1          !2, $8
   10    11        PRE_INC                                                  !1
    9    12    >   IS_SMALLER                                               !1, !3
         13      > JMPNZ                                                    ~11, ->6
   14    14    > > RETURN                                                   !2
   15    15*     > RETURN                                                   null

End of function sum

Generated using Vulcan Logic Dumper, using php 8.0.0


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