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<?php var_dump(strstr('\/\/', 'https://school.nestonline.jp/')); var_dump(strpos('/','\/\///'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/obOLd
function name:  (null)
number of ops:  15
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'strstr'
          2        SEND_VAL                                                 '%5C%2F%5C%2F'
          3        SEND_VAL                                                 'https%3A%2F%2Fschool.nestonline.jp%2F'
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
    3     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'strpos'
          9        SEND_VAL                                                 '%2F'
         10        SEND_VAL                                                 '%5C%2F%5C%2F%2F%2F'
         11        DO_ICALL                                         $2      
         12        SEND_VAR                                                 $2
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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