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<!DOCTYPE html> <html> <body> <?php // Positive numbers: echo substr("Hello world",10)."<br>"; echo substr("Hello world",1)."<br>"; echo substr("Hello world",3)."<br>"; echo substr("Hello world",7)."<br>"; echo "<br>"; // Negative numbers: echo substr("Hello world",-1)."<br>"; echo substr("Hello world",-10)."<br>"; echo substr("Hello world",-8)."<br>"; echo substr("Hello world",-4)."<br>"; ?> </body> </html>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dmZ9O
function name:  (null)
number of ops:  52
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    1     0  E >   ECHO                                                     '%3C%21DOCTYPE+html%3E%0A%3Chtml%3E%0A%3Cbody%3E%0A%0A'
    7     1        INIT_FCALL                                               'substr'
          2        SEND_VAL                                                 'Hello+world'
          3        SEND_VAL                                                 10
          4        DO_ICALL                                         $0      
          5        CONCAT                                           ~1      $0, '%3Cbr%3E'
          6        ECHO                                                     ~1
    8     7        INIT_FCALL                                               'substr'
          8        SEND_VAL                                                 'Hello+world'
          9        SEND_VAL                                                 1
         10        DO_ICALL                                         $2      
         11        CONCAT                                           ~3      $2, '%3Cbr%3E'
         12        ECHO                                                     ~3
    9    13        INIT_FCALL                                               'substr'
         14        SEND_VAL                                                 'Hello+world'
         15        SEND_VAL                                                 3
         16        DO_ICALL                                         $4      
         17        CONCAT                                           ~5      $4, '%3Cbr%3E'
         18        ECHO                                                     ~5
   10    19        INIT_FCALL                                               'substr'
         20        SEND_VAL                                                 'Hello+world'
         21        SEND_VAL                                                 7
         22        DO_ICALL                                         $6      
         23        CONCAT                                           ~7      $6, '%3Cbr%3E'
         24        ECHO                                                     ~7
   11    25        ECHO                                                     '%3Cbr%3E'
   14    26        INIT_FCALL                                               'substr'
         27        SEND_VAL                                                 'Hello+world'
         28        SEND_VAL                                                 -1
         29        DO_ICALL                                         $8      
         30        CONCAT                                           ~9      $8, '%3Cbr%3E'
         31        ECHO                                                     ~9
   15    32        INIT_FCALL                                               'substr'
         33        SEND_VAL                                                 'Hello+world'
         34        SEND_VAL                                                 -10
         35        DO_ICALL                                         $10     
         36        CONCAT                                           ~11     $10, '%3Cbr%3E'
         37        ECHO                                                     ~11
   16    38        INIT_FCALL                                               'substr'
         39        SEND_VAL                                                 'Hello+world'
         40        SEND_VAL                                                 -8
         41        DO_ICALL                                         $12     
         42        CONCAT                                           ~13     $12, '%3Cbr%3E'
         43        ECHO                                                     ~13
   17    44        INIT_FCALL                                               'substr'
         45        SEND_VAL                                                 'Hello+world'
         46        SEND_VAL                                                 -4
         47        DO_ICALL                                         $14     
         48        CONCAT                                           ~15     $14, '%3Cbr%3E'
         49        ECHO                                                     ~15
   19    50        ECHO                                                     '%0A%3C%2Fbody%3E%0A%3C%2Fhtml%3E'
   21    51      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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