3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = 'original value'; $ref =& $var; $hash = ['var' => 'new value']; extract($hash, EXTRACT_REFS); echo 'ref: ', $ref, ' var: ', $var;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5eLMn
function name:  (null)
number of ops:  13
compiled vars:  !0 = $var, !1 = $ref, !2 = $hash
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'original+value'
    4     1        ASSIGN_REF                                               !1, !0
    6     2        ASSIGN                                                   !2, <array>
    8     3        INIT_FCALL                                               'extract'
          4        SEND_REF                                                 !2
          5        FETCH_CONSTANT                                   ~6      'EXTRACT_REFS'
          6        SEND_VAL                                                 ~6
          7        DO_ICALL                                                 
    9     8        ECHO                                                     'ref%3A+'
          9        ECHO                                                     !1
         10        ECHO                                                     '+++var%3A+'
         11        ECHO                                                     !0
         12      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
163.06 ms | 1394 KiB | 15 Q