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<?php function foo(&$var) { } $b = array(); foo($b['b']); var_dump(array_key_exists('b', $b));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6Qi0l
function name:  (null)
number of ops:  10
compiled vars:  !0 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'foo'
          2        FETCH_DIM_W                                      $2      !0, 'b'
          3        SEND_REF                                                 $2
          4        DO_FCALL                                      0          
    6     5        INIT_FCALL                                               'var_dump'
          6        ARRAY_KEY_EXISTS                                 ~4      'b', !0
          7        SEND_VAL                                                 ~4
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6Qi0l
function name:  foo
number of ops:  2
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
          1      > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


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