3v4l.org

run code in 300+ PHP versions simultaneously
<?php $fname = "Jan-"; if (preg_match('/[a-z0-9]/', $fname)) { echo 'Goed!'; } else { echo "Fout"; } ?>
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/1uIvh
function name:  (null)
number of ops:  10
compiled vars:  !0 = $fname
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'Jan-'
    3     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%5Ba-z0-9%5D%2F'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5      > JMPZ                                                     $2, ->8
    4     6    >   ECHO                                                     'Goed%21'
          7      > JMP                                                      ->9
    6     8    >   ECHO                                                     'Fout'
    8     9    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
180.56 ms | 1398 KiB | 16 Q