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<?php $rest = substr("abcdef", 6, -2); $rest1 = substr("abcdef", 6, 4); var_dump($rest); var_dump($rest1);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/rgStf
function name:  (null)
number of ops:  13
compiled vars:  !0 = $rest, !1 = $rest1
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   FRAMELESS_ICALL_3                substr              ~2      'abcdef', 6
          1        OP_DATA                                                      -2
          2        ASSIGN                                                       !0, ~2
    4     3        FRAMELESS_ICALL_3                substr              ~4      'abcdef', 6
          4        OP_DATA                                                      4
          5        ASSIGN                                                       !1, ~4
    5     6        INIT_FCALL                                                   'var_dump'
          7        SEND_VAR                                                     !0
          8        DO_ICALL                                                     
    6     9        INIT_FCALL                                                   'var_dump'
         10        SEND_VAR                                                     !1
         11        DO_ICALL                                                     
         12      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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