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<?php var_dump(filter_var('0x', FILTER_VALIDATE_INT, FILTER_FLAG_ALLOW_HEX)); var_dump(filter_var('0X', FILTER_VALIDATE_INT, FILTER_FLAG_ALLOW_HEX)); var_dump(filter_var('', FILTER_VALIDATE_INT, FILTER_FLAG_ALLOW_HEX)); var_dump(filter_var('0', FILTER_VALIDATE_INT, FILTER_FLAG_ALLOW_HEX));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/m1Pnc
function name:  (null)
number of ops:  33
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'filter_var'
          2        SEND_VAL                                                 '0x'
          3        SEND_VAL                                                 257
          4        SEND_VAL                                                 2
          5        DO_ICALL                                         $0      
          6        SEND_VAR                                                 $0
          7        DO_ICALL                                                 
    4     8        INIT_FCALL                                               'var_dump'
          9        INIT_FCALL                                               'filter_var'
         10        SEND_VAL                                                 '0X'
         11        SEND_VAL                                                 257
         12        SEND_VAL                                                 2
         13        DO_ICALL                                         $2      
         14        SEND_VAR                                                 $2
         15        DO_ICALL                                                 
    5    16        INIT_FCALL                                               'var_dump'
         17        INIT_FCALL                                               'filter_var'
         18        SEND_VAL                                                 ''
         19        SEND_VAL                                                 257
         20        SEND_VAL                                                 2
         21        DO_ICALL                                         $4      
         22        SEND_VAR                                                 $4
         23        DO_ICALL                                                 
    6    24        INIT_FCALL                                               'var_dump'
         25        INIT_FCALL                                               'filter_var'
         26        SEND_VAL                                                 '0'
         27        SEND_VAL                                                 257
         28        SEND_VAL                                                 2
         29        DO_ICALL                                         $6      
         30        SEND_VAR                                                 $6
         31        DO_ICALL                                                 
         32      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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