3v4l.org

run code in 300+ PHP versions simultaneously
<?php $tst = '!!!!'; $a = '@@@'; $template = '{{$tst}}test{{$a}}'; if (preg_match_all("/{{(.*?)}}/", $template, $m)) { foreach ($m[1] as $i => $varname) { $tst=11; echo strval($$varname).PHP_EOL.$m[0][$i].'===='.sprintf('$%s', $varname).PHP_EOL; //$template = str_replace($m[0][$i], ${$varname}, $template); } } $x = '###'.strval($a).PHP_EOL; echo $x; echo $template;
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 30
Branch analysis from position: 9
2 jumps found. (Code = 77) Position 1 = 11, Position 2 = 29
Branch analysis from position: 11
2 jumps found. (Code = 78) Position 1 = 12, Position 2 = 29
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 11
Branch analysis from position: 11
Branch analysis from position: 29
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 29
Branch analysis from position: 30
filename:       /in/vQBXS
function name:  (null)
number of ops:  37
compiled vars:  !0 = $tst, !1 = $a, !2 = $template, !3 = $m, !4 = $varname, !5 = $i, !6 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%21%21%21%21'
    4     1        ASSIGN                                                   !1, '%40%40%40'
    5     2        ASSIGN                                                   !2, '%7B%7B%24tst%7D%7Dtest%7B%7B%24a%7D%7D'
    7     3        INIT_FCALL                                               'preg_match_all'
          4        SEND_VAL                                                 '%2F%7B%7B%28.%2A%3F%29%7D%7D%2F'
          5        SEND_VAR                                                 !2
          6        SEND_REF                                                 !3
          7        DO_ICALL                                         $10     
          8      > JMPZ                                                     $10, ->30
    8     9    >   FETCH_DIM_R                                      ~11     !3, 1
         10      > FE_RESET_R                                       $12     ~11, ->29
         11    > > FE_FETCH_R                                       ~13     $12, !4, ->29
         12    >   ASSIGN                                                   !5, ~13
    9    13        ASSIGN                                                   !0, 11
   10    14        FETCH_R                      local               ~16     !4
         15        CAST                                          6  ~17     ~16
         16        CONCAT                                           ~18     ~17, '%0A'
         17        FETCH_DIM_R                                      ~19     !3, 0
         18        FETCH_DIM_R                                      ~20     ~19, !5
         19        CONCAT                                           ~21     ~18, ~20
         20        CONCAT                                           ~22     ~21, '%3D%3D%3D%3D'
         21        INIT_FCALL                                               'sprintf'
         22        SEND_VAL                                                 '%24%25s'
         23        SEND_VAR                                                 !4
         24        DO_ICALL                                         $23     
         25        CONCAT                                           ~24     ~22, $23
         26        CONCAT                                           ~25     ~24, '%0A'
         27        ECHO                                                     ~25
    8    28      > JMP                                                      ->11
         29    >   FE_FREE                                                  $12
   14    30    >   CAST                                          6  ~26     !1
         31        CONCAT                                           ~27     '%23%23%23', ~26
         32        CONCAT                                           ~28     ~27, '%0A'
         33        ASSIGN                                                   !6, ~28
   15    34        ECHO                                                     !6
   16    35        ECHO                                                     !2
         36      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
153.45 ms | 1396 KiB | 17 Q