3v4l.org

run code in 500+ PHP versions simultaneously
<?php $string = "hello"; echo preg_replace('/(.)(.*)(.)/', '$3$2$1', $string);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/HE3E8
function name:  (null)
number of ops:  5
compiled vars:  !0 = $string
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, 'hello'
    4     1        FRAMELESS_ICALL_3                preg_replace        ~2      '%2F%28.%29%28.%2A%29%28.%29%2F', '%243%242%241'
          2        OP_DATA                                                      !0
          3        ECHO                                                         ~2
          4      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
155.91 ms | 1703 KiB | 13 Q