3v4l.org

run code in 500+ PHP versions simultaneously
<?php var_dump(filter_var('0', FILTER_VALIDATE_INT)); var_dump(filter_var(0, FILTER_VALIDATE_INT));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qVRRS
function name:  (null)
number of ops:  15
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                                                     '0'
          3        SEND_VAL                                                     257
          4        DO_ICALL                                             $0      
          5        SEND_VAR                                                     $0
          6        DO_ICALL                                                     
    4     7        INIT_FCALL                                                   'var_dump'
          8        INIT_FCALL                                                   'filter_var'
          9        SEND_VAL                                                     0
         10        SEND_VAL                                                     257
         11        DO_ICALL                                             $2      
         12        SEND_VAR                                                     $2
         13        DO_ICALL                                                     
         14      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
210.62 ms | 2724 KiB | 15 Q