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<?php $array = [ 'John', 'Brian', 'Julia', 'Adam', 'Brian', 'Jonathan', 'Amanda', 'Julia', 'Nathan' ]; $order = []; foreach ($array as $i => $v) { $lookup[$v] ??= $i; $order[] = $lookup[$v]; } array_multisort($order, $array); var_export($array);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 15
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 15
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 15
filename:       /in/OCpQv
function name:  (null)
number of ops:  24
compiled vars:  !0 = $array, !1 = $order, !2 = $v, !3 = $i, !4 = $lookup
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   15     1        ASSIGN                                                   !1, <array>
   16     2      > FE_RESET_R                                       $7      !0, ->15
          3    > > FE_FETCH_R                                       ~8      $7, !2, ->15
          4    >   ASSIGN                                                   !3, ~8
   17     5        FETCH_DIM_IS                                     ~10     !4, !2
          6        COALESCE                                         ~11     ~10
          7        ASSIGN_DIM                                       ~12     !4, !2
          8        OP_DATA                                                  !3
          9        QM_ASSIGN                                        ~11     ~12
         10        FREE                                                     ~11
   18    11        FETCH_DIM_R                                      ~14     !4, !2
         12        ASSIGN_DIM                                               !1
         13        OP_DATA                                                  ~14
   16    14      > JMP                                                      ->3
         15    >   FE_FREE                                                  $7
   20    16        INIT_FCALL                                               'array_multisort'
         17        SEND_REF                                                 !1
         18        SEND_REF                                                 !0
         19        DO_ICALL                                                 
   21    20        INIT_FCALL                                               'var_export'
         21        SEND_VAR                                                 !0
         22        DO_ICALL                                                 
         23      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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