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<?php $a = [ 'key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', ]; $b = ['key1', 'key3', 'key5']; $c = array_intersect_key($a, array_flip($b)); print_r($c);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/LMQj6
function name:  (null)
number of ops:  14
compiled vars:  !0 = $a, !1 = $b, !2 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   11     1        ASSIGN                                                   !1, <array>
   13     2        INIT_FCALL                                               'array_intersect_key'
          3        SEND_VAR                                                 !0
          4        INIT_FCALL                                               'array_flip'
          5        SEND_VAR                                                 !1
          6        DO_ICALL                                         $5      
          7        SEND_VAR                                                 $5
          8        DO_ICALL                                         $6      
          9        ASSIGN                                                   !2, $6
   15    10        INIT_FCALL                                               'print_r'
         11        SEND_VAR                                                 !2
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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