3v4l.org

run code in 300+ PHP versions simultaneously
<?php $variableName = 'MyVariable'; // Create new variable with the name defined in variable $variableName ${$variableName} = 'MyValue'; //Outputs: string(7) "MyValue" var_dump($MyVariable); //Outputs: string(7) "MyValue" var_dump(${'MyVa1riable'});
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/gd7Xe
function name:  (null)
number of ops:  10
compiled vars:  !0 = $variableName, !1 = $MyVariable, !2 = $MyVa1riable
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'MyVariable'
    4     1        FETCH_W                      local               $4      !0
          2        ASSIGN                                                   $4, 'MyValue'
    6     3        INIT_FCALL                                               'var_dump'
          4        SEND_VAR                                                 !1
          5        DO_ICALL                                                 
    8     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !2
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
153.23 ms | 1385 KiB | 15 Q