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<?php var_export( strlen(base64_decode('/w==')) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9i8EG
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_export'
          1        INIT_FCALL                                               'base64_decode'
          2        SEND_VAL                                                 '%2Fw%3D%3D'
          3        DO_ICALL                                         $0      
          4        STRLEN                                           ~1      $0
          5        SEND_VAL                                                 ~1
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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