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<?php $ids=array("a","b","c","d","e"); $groups=array(array("a","c"),array("c","e")); array_walk($groups,function($v,$i)use(&$ids){ $ids=array_intersect ($ids,$v); }); print_r($ids);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iU1gf
function name:  (null)
number of ops:  12
compiled vars:  !0 = $ids, !1 = $groups
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        ASSIGN                                                   !1, <array>
    5     2        INIT_FCALL                                               'array_walk'
          3        SEND_REF                                                 !1
          4        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FiU1gf%3A5%240'
          5        BIND_LEXICAL                                             ~4, !0
    7     6        SEND_VAL                                                 ~4
          7        DO_ICALL                                                 
    8     8        INIT_FCALL                                               'print_r'
          9        SEND_VAR                                                 !0
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FiU1gf%3A5%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iU1gf
function name:  {closure}
number of ops:  9
compiled vars:  !0 = $v, !1 = $i, !2 = $ids
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        BIND_STATIC                                              !2
    6     3        INIT_FCALL                                               'array_intersect'
          4        SEND_VAR                                                 !2
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $3      
          7        ASSIGN                                                   !2, $3
    7     8      > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FiU1gf%3A5%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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