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<?php var_dump(substr("test", 5)); var_dump(substr("test", -1, -5)); var_dump(substr("test", 1, -4));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6aUKU
function name:  (null)
number of ops:  24
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'substr'
          2        SEND_VAL                                                 'test'
          3        SEND_VAL                                                 5
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
    4     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'substr'
          9        SEND_VAL                                                 'test'
         10        SEND_VAL                                                 -1
         11        SEND_VAL                                                 -5
         12        DO_ICALL                                         $2      
         13        SEND_VAR                                                 $2
         14        DO_ICALL                                                 
    5    15        INIT_FCALL                                               'var_dump'
         16        INIT_FCALL                                               'substr'
         17        SEND_VAL                                                 'test'
         18        SEND_VAL                                                 1
         19        SEND_VAL                                                 -4
         20        DO_ICALL                                         $4      
         21        SEND_VAR                                                 $4
         22        DO_ICALL                                                 
         23      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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