3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ignore = array('GLOBALS', '_FILES', '_COOKIE', '_POST', '_GET', '_SERVER', '_ENV', 'ignore'); var_dump($ignore); $i2=array_flip($ignore); var_dump($i2);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/t87fP
function name:  (null)
number of ops:  12
compiled vars:  !0 = $ignore, !1 = $i2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    6     4        INIT_FCALL                                               'array_flip'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $4      
          7        ASSIGN                                                   !1, $4
    7     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !1
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
161.62 ms | 1394 KiB | 17 Q