3v4l.org

run code in 500+ PHP versions simultaneously
<?php $string = '56A19E6D77828333'; var_export(preg_replace('~.{4}\K(?!$)~', ' ', $string));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9Ka5u
function name:  (null)
number of ops:  7
compiled vars:  !0 = $string
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, '56A19E6D77828333'
    3     1        INIT_FCALL                                                   'var_export'
          2        FRAMELESS_ICALL_3                preg_replace        ~2      '%7E.%7B4%7D%5CK%28%3F%21%24%29%7E', '+'
          3        OP_DATA                                                      !0
          4        SEND_VAL                                                     ~2
          5        DO_ICALL                                                     
          6      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
158.99 ms | 2059 KiB | 14 Q