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<?php $data = array( "item1"=>"1", "item2"=>"3", "item3"=>"5", "item4"=>"2", "item5"=>"4" ); $sortingArr = array("5","4","3","2","1"); $keys = array_flip($sortingArr); usort($data, function ($a, $b) use ($keys) { return $keys[$a] > $keys[$b] ? 1 : -1; }); print_r($data);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/75cnu
function name:  (null)
number of ops:  16
compiled vars:  !0 = $data, !1 = $sortingArr, !2 = $keys
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_flip'
          3        SEND_VAR                                                     !1
          4        DO_ICALL                                             $5      
          5        ASSIGN                                                       !2, $5
   15     6        INIT_FCALL                                                   'usort'
          7        SEND_REF                                                     !0
          8        DECLARE_LAMBDA_FUNCTION                              ~7      [0]
          9        BIND_LEXICAL                                                 ~7, !2
   17    10        SEND_VAL                                                     ~7
   15    11        DO_ICALL                                                     
   19    12        INIT_FCALL                                                   'print_r'
         13        SEND_VAR                                                     !0
         14        DO_ICALL                                                     
         15      > RETURN                                                       1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 9
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/75cnu
function name:  {closure:/in/75cnu:15}
number of ops:  12
compiled vars:  !0 = $a, !1 = $b, !2 = $keys
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   15     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
          2        BIND_STATIC                                                  !2
   16     3        FETCH_DIM_R                                          ~3      !2, !0
          4        FETCH_DIM_R                                          ~4      !2, !1
          5        IS_SMALLER                                                   ~4, ~3
          6      > JMPZ                                                         ~5, ->9
          7    >   QM_ASSIGN                                            ~6      1
          8      > JMP                                                          ->10
          9    >   QM_ASSIGN                                            ~6      -1
         10    > > RETURN                                                       ~6
   17    11*     > RETURN                                                       null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.5.0


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