3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo filter_var(1, FILTER_VALIDATE_BOOLEAN); echo PHP_EOL; echo filter_var('1', FILTER_VALIDATE_BOOLEAN); echo PHP_EOL; echo filter_var(0, FILTER_VALIDATE_BOOLEAN); echo PHP_EOL; echo filter_var('0', FILTER_VALIDATE_BOOLEAN); echo PHP_EOL; echo filter_var(true, FILTER_VALIDATE_BOOLEAN); echo PHP_EOL; echo filter_var(false, FILTER_VALIDATE_BOOLEAN); echo PHP_EOL;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Sk1cn
function name:  (null)
number of ops:  37
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'filter_var'
          1        SEND_VAL                                                 1
          2        SEND_VAL                                                 258
          3        DO_ICALL                                         $0      
          4        ECHO                                                     $0
    4     5        ECHO                                                     '%0A'
    6     6        INIT_FCALL                                               'filter_var'
          7        SEND_VAL                                                 '1'
          8        SEND_VAL                                                 258
          9        DO_ICALL                                         $1      
         10        ECHO                                                     $1
    7    11        ECHO                                                     '%0A'
    9    12        INIT_FCALL                                               'filter_var'
         13        SEND_VAL                                                 0
         14        SEND_VAL                                                 258
         15        DO_ICALL                                         $2      
         16        ECHO                                                     $2
   10    17        ECHO                                                     '%0A'
   12    18        INIT_FCALL                                               'filter_var'
         19        SEND_VAL                                                 '0'
         20        SEND_VAL                                                 258
         21        DO_ICALL                                         $3      
         22        ECHO                                                     $3
   13    23        ECHO                                                     '%0A'
   15    24        INIT_FCALL                                               'filter_var'
         25        SEND_VAL                                                 <true>
         26        SEND_VAL                                                 258
         27        DO_ICALL                                         $4      
         28        ECHO                                                     $4
   16    29        ECHO                                                     '%0A'
   18    30        INIT_FCALL                                               'filter_var'
         31        SEND_VAL                                                 <false>
         32        SEND_VAL                                                 258
         33        DO_ICALL                                         $5      
         34        ECHO                                                     $5
   19    35        ECHO                                                     '%0A'
         36      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
147.58 ms | 1396 KiB | 15 Q