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<?php $string = "42.9384658354.3847658354...."; list ($id) = explode(".", $string, -2); var_dump($id);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6uOXV
function name:  (null)
number of ops:  13
compiled vars:  !0 = $string, !1 = $id
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '42.9384658354.3847658354....'
    4     1        INIT_FCALL                                               'explode'
          2        SEND_VAL                                                 '.'
          3        SEND_VAR                                                 !0
          4        SEND_VAL                                                 -2
          5        DO_ICALL                                         $3      
          6        FETCH_LIST_R                                     $4      $3, 0
          7        ASSIGN                                                   !1, $4
          8        FREE                                                     $3
    5     9        INIT_FCALL                                               'var_dump'
         10        SEND_VAR                                                 !1
         11        DO_ICALL                                                 
         12      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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