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<?php $a = array('a' => 1, 'b' => 2, 'c' => 3); $b = array('a' => 1, 'b' => 2, 'c' => 3); var_dump(count(array_diff_key($a, $b)));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WcDf0
function name:  (null)
number of ops:  11
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        ASSIGN                                                   !1, <array>
    4     2        INIT_FCALL                                               'var_dump'
          3        INIT_FCALL                                               'array_diff_key'
          4        SEND_VAR                                                 !0
          5        SEND_VAR                                                 !1
          6        DO_ICALL                                         $4      
          7        COUNT                                            ~5      $4
          8        SEND_VAL                                                 ~5
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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