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<?php var_dump(filter_var(false, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var(0, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var("0", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var("off", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var("", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var("false", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var("no", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var(true, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var(1, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var("1", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var("on", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var("yes", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var("invalid", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Tm4W5
function name:  (null)
number of ops:  105
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'filter_var'
          2        SEND_VAL                                                 <false>
          3        SEND_VAL                                                 258
          4        SEND_VAL                                                 134217728
          5        DO_ICALL                                         $0      
          6        SEND_VAR                                                 $0
          7        DO_ICALL                                                 
    3     8        INIT_FCALL                                               'var_dump'
          9        INIT_FCALL                                               'filter_var'
         10        SEND_VAL                                                 0
         11        SEND_VAL                                                 258
         12        SEND_VAL                                                 134217728
         13        DO_ICALL                                         $2      
         14        SEND_VAR                                                 $2
         15        DO_ICALL                                                 
    4    16        INIT_FCALL                                               'var_dump'
         17        INIT_FCALL                                               'filter_var'
         18        SEND_VAL                                                 '0'
         19        SEND_VAL                                                 258
         20        SEND_VAL                                                 134217728
         21        DO_ICALL                                         $4      
         22        SEND_VAR                                                 $4
         23        DO_ICALL                                                 
    5    24        INIT_FCALL                                               'var_dump'
         25        INIT_FCALL                                               'filter_var'
         26        SEND_VAL                                                 'off'
         27        SEND_VAL                                                 258
         28        SEND_VAL                                                 134217728
         29        DO_ICALL                                         $6      
         30        SEND_VAR                                                 $6
         31        DO_ICALL                                                 
    6    32        INIT_FCALL                                               'var_dump'
         33        INIT_FCALL                                               'filter_var'
         34        SEND_VAL                                                 ''
         35        SEND_VAL                                                 258
         36        SEND_VAL                                                 134217728
         37        DO_ICALL                                         $8      
         38        SEND_VAR                                                 $8
         39        DO_ICALL                                                 
    7    40        INIT_FCALL                                               'var_dump'
         41        INIT_FCALL                                               'filter_var'
         42        SEND_VAL                                                 'false'
         43        SEND_VAL                                                 258
         44        SEND_VAL                                                 134217728
         45        DO_ICALL                                         $10     
         46        SEND_VAR                                                 $10
         47        DO_ICALL                                                 
    8    48        INIT_FCALL                                               'var_dump'
         49        INIT_FCALL                                               'filter_var'
         50        SEND_VAL                                                 'no'
         51        SEND_VAL                                                 258
         52        SEND_VAL                                                 134217728
         53        DO_ICALL                                         $12     
         54        SEND_VAR                                                 $12
         55        DO_ICALL                                                 
   10    56        INIT_FCALL                                               'var_dump'
         57        INIT_FCALL                                               'filter_var'
         58        SEND_VAL                                                 <true>
         59        SEND_VAL                                                 258
         60        SEND_VAL                                                 134217728
         61        DO_ICALL                                         $14     
         62        SEND_VAR                                                 $14
         63        DO_ICALL                                                 
   11    64        INIT_FCALL                                               'var_dump'
         65        INIT_FCALL                                               'filter_var'
         66        SEND_VAL                                                 1
         67        SEND_VAL                                                 258
         68        SEND_VAL                                                 134217728
         69        DO_ICALL                                         $16     
         70        SEND_VAR                                                 $16
         71        DO_ICALL                                                 
   12    72        INIT_FCALL                                               'var_dump'
         73        INIT_FCALL                                               'filter_var'
         74        SEND_VAL                                                 '1'
         75        SEND_VAL                                                 258
         76        SEND_VAL                                                 134217728
         77        DO_ICALL                                         $18     
         78        SEND_VAR                                                 $18
         79        DO_ICALL                                                 
   13    80        INIT_FCALL                                               'var_dump'
         81        INIT_FCALL                                               'filter_var'
         82        SEND_VAL                                                 'on'
         83        SEND_VAL                                                 258
         84        SEND_VAL                                                 134217728
         85        DO_ICALL                                         $20     
         86        SEND_VAR                                                 $20
         87        DO_ICALL                                                 
   14    88        INIT_FCALL                                               'var_dump'
         89        INIT_FCALL                                               'filter_var'
         90        SEND_VAL                                                 'yes'
         91        SEND_VAL                                                 258
         92        SEND_VAL                                                 134217728
         93        DO_ICALL                                         $22     
         94        SEND_VAR                                                 $22
         95        DO_ICALL                                                 
   16    96        INIT_FCALL                                               'var_dump'
         97        INIT_FCALL                                               'filter_var'
         98        SEND_VAL                                                 'invalid'
         99        SEND_VAL                                                 258
        100        SEND_VAL                                                 134217728
        101        DO_ICALL                                         $24     
        102        SEND_VAR                                                 $24
        103        DO_ICALL                                                 
        104      > RETURN                                                   1

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