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<?php $arr1 = ['test' => 'test', 'yup' => 'nope', 'dick' => 'fart']; $arr2 = ['test', 'yup', 'yolo']; $diff = array_diff(array_keys($arr1), $arr2); var_dump($diff);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/jK95i
function name:  (null)
number of ops:  14
compiled vars:  !0 = $arr1, !1 = $arr2, !2 = $diff
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, <array>
    6     2        INIT_FCALL                                               'array_diff'
          3        INIT_FCALL                                               'array_keys'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $5      
          6        SEND_VAR                                                 $5
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                         $6      
          9        ASSIGN                                                   !2, $6
    8    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !2
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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