3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ["úù" => "u"]; foreach($a as $k => $v); echo preg_replace('/['. $k . ']/', $v, 'olóáé');
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 5
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 5
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 5
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/GilNV
function name:  (null)
number of ops:  15
compiled vars:  !0 = $a, !1 = $v, !2 = $k
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1      > FE_RESET_R                                       $4      !0, ->5
          2    > > FE_FETCH_R                                       ~5      $4, !1, ->5
          3    >   ASSIGN                                                   !2, ~5
          4      > JMP                                                      ->2
          5    >   FE_FREE                                                  $4
    6     6        INIT_FCALL                                               'preg_replace'
          7        CONCAT                                           ~7      '%2F%5B', !2
          8        CONCAT                                           ~8      ~7, '%5D%2F'
          9        SEND_VAL                                                 ~8
         10        SEND_VAR                                                 !1
         11        SEND_VAL                                                 'ol%C3%B3%C3%A1%C3%A9'
         12        DO_ICALL                                         $9      
         13        ECHO                                                     $9
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
151.56 ms | 1394 KiB | 15 Q