3v4l.org

run code in 300+ PHP versions simultaneously
<?php $location = new stdClass; $location->city = "Chicago"; $variableName = 'location->city'; ${$variableName} = 'Chicago'; $str = "\$location->city Dentist"; var_dump($str);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ss3hF
function name:  (null)
number of ops:  13
compiled vars:  !0 = $location, !1 = $variableName, !2 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $3      'stdClass'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $3
    3     3        ASSIGN_OBJ                                               !0, 'city'
          4        OP_DATA                                                  'Chicago'
    5     5        ASSIGN                                                   !1, 'location-%3Ecity'
    6     6        FETCH_W                      local               $8      !1
          7        ASSIGN                                                   $8, 'Chicago'
    7     8        ASSIGN                                                   !2, '%24location-%3Ecity+Dentist'
    8     9        INIT_FCALL                                               'var_dump'
         10        SEND_VAR                                                 !2
         11        DO_ICALL                                                 
         12      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
153.29 ms | 1394 KiB | 15 Q