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<?php $class = '1.2.3.4.5.6'; $base = explode(".", $class)[0]; echo $base;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/uRDS7
function name:  (null)
number of ops:  9
compiled vars:  !0 = $class, !1 = $base
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, '1.2.3.4.5.6'
    3     1        INIT_FCALL                                                   'explode'
          2        SEND_VAL                                                     '.'
          3        SEND_VAR                                                     !0
          4        DO_ICALL                                             $3      
          5        FETCH_DIM_R                                          ~4      $3, 0
          6        ASSIGN                                                       !1, ~4
    4     7        ECHO                                                         !1
          8      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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