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<?php $array = [ [ "product1" => (object) ["product_id" => "9416", "price"=>"110.00"], "product2" => (object) ["product_id"=>"9431", "price"=>"100.00"] ], [ "product1" => (object) ["product_id" => "1254", "price"=>"75.00"], "product2" => (object) ["product_id"=>"9431", "price"=>"62.00"] ], [ "product1" => (object) ["product_id" => "9416", "price"=>"45.00"], "product2" => (object) ["product_id"=>"9431", "price"=>"50.00"] ], [ "product1" => (object) ["product_id" => "9416", "price"=>"60.00"], "product2" => (object) ["product_id"=>"9431", "price"=>"25.00"] ] ]; usort($array, function($a, $b) { return $a['product1']->price + $a['product2']->price <=> $b['product1']->price + $b['product2']->price; }); var_export($array);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6WntK
function name:  (null)
number of ops:  30
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   CAST                                          8  ~1      <array>
          1        INIT_ARRAY                                       ~2      ~1, 'product1'
    5     2        CAST                                          8  ~3      <array>
          3        ADD_ARRAY_ELEMENT                                ~2      ~3, 'product2'
          4        INIT_ARRAY                                       ~4      ~2
    8     5        CAST                                          8  ~5      <array>
          6        INIT_ARRAY                                       ~6      ~5, 'product1'
    9     7        CAST                                          8  ~7      <array>
          8        ADD_ARRAY_ELEMENT                                ~6      ~7, 'product2'
          9        ADD_ARRAY_ELEMENT                                ~4      ~6
   12    10        CAST                                          8  ~8      <array>
         11        INIT_ARRAY                                       ~9      ~8, 'product1'
   13    12        CAST                                          8  ~10     <array>
         13        ADD_ARRAY_ELEMENT                                ~9      ~10, 'product2'
         14        ADD_ARRAY_ELEMENT                                ~4      ~9
   16    15        CAST                                          8  ~11     <array>
         16        INIT_ARRAY                                       ~12     ~11, 'product1'
   17    17        CAST                                          8  ~13     <array>
         18        ADD_ARRAY_ELEMENT                                ~12     ~13, 'product2'
         19        ADD_ARRAY_ELEMENT                                ~4      ~12
    2    20        ASSIGN                                                   !0, ~4
   21    21        INIT_FCALL                                               'usort'
         22        SEND_REF                                                 !0
         23        DECLARE_LAMBDA_FUNCTION                          ~15     [0]
   23    24        SEND_VAL                                                 ~15
   21    25        DO_ICALL                                                 
   25    26        INIT_FCALL                                               'var_export'
         27        SEND_VAR                                                 !0
         28        DO_ICALL                                                 
         29      > RETURN                                                   1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6WntK
function name:  {closure}
number of ops:  15
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   21     0  E >   RECV                                             !0      
          1        RECV                                             !1      
   22     2        FETCH_DIM_R                                      ~2      !0, 'product1'
          3        FETCH_OBJ_R                                      ~3      ~2, 'price'
          4        FETCH_DIM_R                                      ~4      !0, 'product2'
          5        FETCH_OBJ_R                                      ~5      ~4, 'price'
          6        ADD                                              ~6      ~3, ~5
          7        FETCH_DIM_R                                      ~7      !1, 'product1'
          8        FETCH_OBJ_R                                      ~8      ~7, 'price'
          9        FETCH_DIM_R                                      ~9      !1, 'product2'
         10        FETCH_OBJ_R                                      ~10     ~9, 'price'
         11        ADD                                              ~11     ~8, ~10
         12        SPACESHIP                                        ~12     ~6, ~11
         13      > RETURN                                                   ~12
   23    14*     > RETURN                                                   null

End of Dynamic Function 0

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