3v4l.org

run code in 300+ PHP versions simultaneously
<?php $version = []; $version['extra'] = 'TEST'; $fileContents = <<<EOT const EXTRA_VERSION = 'beta5-dev'; EOT; echo preg_replace("#EXTRA_VERSION\s*=\s*'[^\']*'#", "EXTRA_VERSION = '" . $version['extra'] . "'", $fileContents); echo "\n\n"; echo preg_replace("#EXTRA_VERSION\s*=\s*'[^']*'#", "EXTRA_VERSION = '" . $version['extra'] . "'", $fileContents);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/39fil
function name:  (null)
number of ops:  24
compiled vars:  !0 = $version, !1 = $fileContents
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN_DIM                                               !0, 'extra'
          2        OP_DATA                                                  'TEST'
    6     3        ASSIGN                                                   !1, '%0A%09const+EXTRA_VERSION+%3D+%27beta5-dev%27%3B%0A'
   12     4        INIT_FCALL                                               'preg_replace'
          5        SEND_VAL                                                 '%23EXTRA_VERSION%5Cs%2A%3D%5Cs%2A%27%5B%5E%5C%27%5D%2A%27%23'
          6        FETCH_DIM_R                                      ~5      !0, 'extra'
          7        CONCAT                                           ~6      'EXTRA_VERSION+%3D+%27', ~5
          8        CONCAT                                           ~7      ~6, '%27'
          9        SEND_VAL                                                 ~7
         10        SEND_VAR                                                 !1
         11        DO_ICALL                                         $8      
         12        ECHO                                                     $8
   13    13        ECHO                                                     '%0A%0A'
   14    14        INIT_FCALL                                               'preg_replace'
         15        SEND_VAL                                                 '%23EXTRA_VERSION%5Cs%2A%3D%5Cs%2A%27%5B%5E%27%5D%2A%27%23'
         16        FETCH_DIM_R                                      ~9      !0, 'extra'
         17        CONCAT                                           ~10     'EXTRA_VERSION+%3D+%27', ~9
         18        CONCAT                                           ~11     ~10, '%27'
         19        SEND_VAL                                                 ~11
         20        SEND_VAR                                                 !1
         21        DO_ICALL                                         $12     
         22        ECHO                                                     $12
         23      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
148.77 ms | 1075 KiB | 14 Q