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run code in 300+ PHP versions simultaneously
<?php $supportedEncodings = [ 'iso-8859-1', 'iso8859-1', 'iso-8859-5', 'iso8859-5', 'iso-8859-15', 'iso8859-15', 'utf-8', 'cp866', 'ibm866', '866', 'cp1251', 'windows-1251', 'win-1251', '1251', 'cp1252', 'windows-1252', '1252', 'koi8-r', 'koi8-ru', 'koi8r', 'big5', '950', 'gb2312', '936', 'big5-hkscs', 'shift_jis', 'sjis', 'sjis-win', 'cp932', '932', 'euc-jp', 'eucjp', 'eucjp-win', 'macroman' ]; var_dump(isset($supportedEncodings['866']));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/kWMJp
function name:  (null)
number of ops:  6
compiled vars:  !0 = $supportedEncodings
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'var_dump'
          2        ISSET_ISEMPTY_DIM_OBJ                         0  ~2      !0, 866
          3        SEND_VAL                                                 ~2
          4        DO_ICALL                                                 
          5      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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