3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set("display_errors",1); error_reporting(E_ALL); var_dump($a); $a=null; var_dump($a); unset($a); var_dump($a); $a["not_an_array"]=13; var_dump($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/rMJh4
function name:  (null)
number of ops:  24
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'ini_set'
          1        SEND_VAL                                                 'display_errors'
          2        SEND_VAL                                                 1
          3        DO_ICALL                                                 
    3     4        INIT_FCALL                                               'error_reporting'
          5        SEND_VAL                                                 32767
          6        DO_ICALL                                                 
    4     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                                 
    5    10        ASSIGN                                                   !0, null
    6    11        INIT_FCALL                                               'var_dump'
         12        SEND_VAR                                                 !0
         13        DO_ICALL                                                 
    7    14        UNSET_CV                                                 !0
    8    15        INIT_FCALL                                               'var_dump'
         16        SEND_VAR                                                 !0
         17        DO_ICALL                                                 
    9    18        ASSIGN_DIM                                               !0, 'not_an_array'
         19        OP_DATA                                                  13
   10    20        INIT_FCALL                                               'var_dump'
         21        SEND_VAR                                                 !0
         22        DO_ICALL                                                 
         23      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
150.16 ms | 1015 KiB | 16 Q