3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input = 'a'; if (ctype_alnum($input)) { echo 'oke'; } else { echo 'niet oke of leeg'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 5, Position 2 = 7
Branch analysis from position: 5
1 jumps found. (Code = 42) Position 1 = 8
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WGMZS
function name:  (null)
number of ops:  9
compiled vars:  !0 = $input
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'a'
    3     1        INIT_FCALL                                               'ctype_alnum'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                         $2      
          4      > JMPZ                                                     $2, ->7
    4     5    >   ECHO                                                     'oke'
          6      > JMP                                                      ->8
    6     7    >   ECHO                                                     'niet+oke+of+leeg'
    7     8    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
178.16 ms | 1394 KiB | 15 Q