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<?php $userfile_name = null; $value = explode(".", $userfile_name); $file_ext = strtolower(array_pop($value)); echo $file_ext; ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/q6dJa
function name:  (null)
number of ops:  15
compiled vars:  !0 = $userfile_name, !1 = $value, !2 = $file_ext
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, null
    3     1        INIT_FCALL                                               'explode'
          2        SEND_VAL                                                 '.'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $4      
          5        ASSIGN                                                   !1, $4
    4     6        INIT_FCALL                                               'strtolower'
          7        INIT_FCALL                                               'array_pop'
          8        SEND_REF                                                 !1
          9        DO_ICALL                                         $6      
         10        SEND_VAR                                                 $6
         11        DO_ICALL                                         $7      
         12        ASSIGN                                                   !2, $7
    5    13        ECHO                                                     !2
    6    14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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