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<?php $data = [ [ "item" => 'apple', "quality" => 3, "store" => 'freds', "price" => 2 ], [ "item" => 'pear', "quality" => 1, "store" => 'bobs', "price" => 3 ], [ "item" => 'banana', "quality" => 2, "store" => 'freds', "price" => 1 ], [ "item" => 'kiwi', "quality" => 2, "store" => 'sams', "price" => 4 ], [ "item" => 'coconut', "quality" => 2, "store" => 'sams', "price" => 6, ], [ "item" => 'lime', "quality" => 3, "store" => 'sams', "price" => 5 ] ]; usort($data, function ($a,$b){ if($a['quality']==$b['quality']){ if($a['store']==$b['store']){ if($a['price']==$b['price']){ return 0; }else{ return $a['price']>$b['price']?-1:1;//Descending } }else{ return $a['store']<$b['store']?-1:1;//Ascending } }else{ return $a['quality']<$b['quality']?-1:1;//Ascending } }); var_dump($data);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CD2qE
function name:  (null)
number of ops:  10
compiled vars:  !0 = $data
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   42     1        INIT_FCALL                                               'usort'
          2        SEND_REF                                                 !0
          3        DECLARE_LAMBDA_FUNCTION                          ~2      [0]
   56     4        SEND_VAL                                                 ~2
   42     5        DO_ICALL                                                 
   58     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > RETURN                                                   1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 34
Branch analysis from position: 6
2 jumps found. (Code = 43) Position 1 = 10, Position 2 = 25
Branch analysis from position: 10
2 jumps found. (Code = 43) Position 1 = 14, Position 2 = 16
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 16
2 jumps found. (Code = 43) Position 1 = 20, Position 2 = 22
Branch analysis from position: 20
1 jumps found. (Code = 42) Position 1 = 23
Branch analysis from position: 23
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 22
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 25
2 jumps found. (Code = 43) Position 1 = 29, Position 2 = 31
Branch analysis from position: 29
1 jumps found. (Code = 42) Position 1 = 32
Branch analysis from position: 32
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 31
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 34
2 jumps found. (Code = 43) Position 1 = 38, Position 2 = 40
Branch analysis from position: 38
1 jumps found. (Code = 42) Position 1 = 41
Branch analysis from position: 41
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 40
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CD2qE
function name:  {closure}
number of ops:  43
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   42     0  E >   RECV                                             !0      
          1        RECV                                             !1      
   43     2        FETCH_DIM_R                                      ~2      !0, 'quality'
          3        FETCH_DIM_R                                      ~3      !1, 'quality'
          4        IS_EQUAL                                                 ~2, ~3
          5      > JMPZ                                                     ~4, ->34
   44     6    >   FETCH_DIM_R                                      ~5      !0, 'store'
          7        FETCH_DIM_R                                      ~6      !1, 'store'
          8        IS_EQUAL                                                 ~5, ~6
          9      > JMPZ                                                     ~7, ->25
   45    10    >   FETCH_DIM_R                                      ~8      !0, 'price'
         11        FETCH_DIM_R                                      ~9      !1, 'price'
         12        IS_EQUAL                                                 ~8, ~9
         13      > JMPZ                                                     ~10, ->16
   46    14    > > RETURN                                                   0
   45    15*       JMP                                                      ->24
   48    16    >   FETCH_DIM_R                                      ~11     !0, 'price'
         17        FETCH_DIM_R                                      ~12     !1, 'price'
         18        IS_SMALLER                                               ~12, ~11
         19      > JMPZ                                                     ~13, ->22
         20    >   QM_ASSIGN                                        ~14     -1
         21      > JMP                                                      ->23
         22    >   QM_ASSIGN                                        ~14     1
         23    > > RETURN                                                   ~14
   44    24*       JMP                                                      ->33
   51    25    >   FETCH_DIM_R                                      ~15     !0, 'store'
         26        FETCH_DIM_R                                      ~16     !1, 'store'
         27        IS_SMALLER                                               ~15, ~16
         28      > JMPZ                                                     ~17, ->31
         29    >   QM_ASSIGN                                        ~18     -1
         30      > JMP                                                      ->32
         31    >   QM_ASSIGN                                        ~18     1
         32    > > RETURN                                                   ~18
   43    33*       JMP                                                      ->42
   54    34    >   FETCH_DIM_R                                      ~19     !0, 'quality'
         35        FETCH_DIM_R                                      ~20     !1, 'quality'
         36        IS_SMALLER                                               ~19, ~20
         37      > JMPZ                                                     ~21, ->40
         38    >   QM_ASSIGN                                        ~22     -1
         39      > JMP                                                      ->41
         40    >   QM_ASSIGN                                        ~22     1
         41    > > RETURN                                                   ~22
   56    42*     > RETURN                                                   null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
143.09 ms | 1008 KiB | 15 Q