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<?php var_dump( filter_var(1, FILTER_VALIDATE_BOOLEAN) ); var_dump( (1) ); var_dump( !(!1) ); echo str_repeat('-', 30); var_dump( filter_var('1', FILTER_VALIDATE_BOOLEAN) ); var_dump( filter_var(0, FILTER_VALIDATE_BOOLEAN) ); var_dump( filter_var('0', FILTER_VALIDATE_BOOLEAN) ); var_dump( filter_var(true, FILTER_VALIDATE_BOOLEAN) ); var_dump( filter_var(false, FILTER_VALIDATE_BOOLEAN) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WPhir
function name:  (null)
number of ops:  54
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                                                 1
          3        SEND_VAL                                                 258
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
    4     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAL                                                 1
          9        DO_ICALL                                                 
    5    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAL                                                 <true>
         12        DO_ICALL                                                 
    7    13        INIT_FCALL                                               'str_repeat'
         14        SEND_VAL                                                 '-'
         15        SEND_VAL                                                 30
         16        DO_ICALL                                         $4      
         17        ECHO                                                     $4
    9    18        INIT_FCALL                                               'var_dump'
         19        INIT_FCALL                                               'filter_var'
         20        SEND_VAL                                                 '1'
         21        SEND_VAL                                                 258
         22        DO_ICALL                                         $5      
         23        SEND_VAR                                                 $5
         24        DO_ICALL                                                 
   11    25        INIT_FCALL                                               'var_dump'
         26        INIT_FCALL                                               'filter_var'
         27        SEND_VAL                                                 0
         28        SEND_VAL                                                 258
         29        DO_ICALL                                         $7      
         30        SEND_VAR                                                 $7
         31        DO_ICALL                                                 
   13    32        INIT_FCALL                                               'var_dump'
         33        INIT_FCALL                                               'filter_var'
         34        SEND_VAL                                                 '0'
         35        SEND_VAL                                                 258
         36        DO_ICALL                                         $9      
         37        SEND_VAR                                                 $9
         38        DO_ICALL                                                 
   15    39        INIT_FCALL                                               'var_dump'
         40        INIT_FCALL                                               'filter_var'
         41        SEND_VAL                                                 <true>
         42        SEND_VAL                                                 258
         43        DO_ICALL                                         $11     
         44        SEND_VAR                                                 $11
         45        DO_ICALL                                                 
   17    46        INIT_FCALL                                               'var_dump'
         47        INIT_FCALL                                               'filter_var'
         48        SEND_VAL                                                 <false>
         49        SEND_VAL                                                 258
         50        DO_ICALL                                         $13     
         51        SEND_VAR                                                 $13
         52        DO_ICALL                                                 
         53      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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