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<?php $array = [ ['entity_id' => 10, 'product_id' => 424, 'city' => 18, 'sort_order' => 10, 'deal_type_id' => 'dow', 'deal_from_date' => '2010-12-18', 'deal_to_date' => '2026-02-19'], ['entity_id' => 11, 'product_id' => 423, 'city' => 18, 'sort_order' => 11, 'deal_type_id' => 'dow', 'deal_from_date' => '2010-12-18', 'deal_to_date' => '2027-02-19'], ['entity_id' => 12, 'product_id' => 422, 'city' => 18, 'sort_order' => 12, 'deal_type_id' => 'dow', 'deal_from_date' => '2011-12-18', 'deal_to_date' => '2030-01-19'], ['entity_id' => 13, 'product_id' => 420, 'city' => 18, 'sort_order' => 13, 'deal_type_id' => 'dow', 'deal_from_date' => '2011-12-18', 'deal_to_date' => '2030-01-19'], ['entity_id' => 1, 'product_id' => 463, 'city' => 18, 'sort_order' => 1, 'deal_type_id' => 'dod', 'deal_from_date' => '2013-12-18', 'deal_to_date' => '2025-01-19'], ['entity_id' => 2, 'product_id' => 452, 'city' => 18, 'sort_order' => 2, 'deal_type_id' => 'dom', 'deal_from_date' => '2013-12-18', 'deal_to_date' => '2026-01-19'], ['entity_id' => 3, 'product_id' => 448, 'city' => 18, 'sort_order' => 3, 'deal_type_id' => 'dod', 'deal_from_date' => '2013-12-18', 'deal_to_date' => '2027-01-19'], ['entity_id' => 4, 'product_id' => 441, 'city' => 18, 'sort_order' => 4, 'deal_type_id' => 'dod', 'deal_from_date' => '2013-12-18', 'deal_to_date' => '2024-01-19'], ['entity_id' => 5, 'product_id' => 440, 'city' => 18, 'sort_order' => 5, 'deal_type_id' => 'dod', 'deal_from_date' => '2013-12-18', 'deal_to_date' => '2027-01-19'], ['entity_id' => 6, 'product_id' => 439, 'city' => 18, 'sort_order' => 6, 'deal_type_id' => 'dom', 'deal_from_date' => '2013-12-18', 'deal_to_date' => '2028-01-19'], ['entity_id' => 7, 'product_id' => 433, 'city' => 18, 'sort_order' => 7, 'deal_type_id' => 'dom', 'deal_from_date' => '2013-12-18', 'deal_to_date' => '2013-01-19'], ['entity_id' => 8, 'product_id' => 427, 'city' => 18, 'sort_order' => 8, 'deal_type_id' => 'dod', 'deal_from_date' => '2013-12-18', 'deal_to_date' => '2022-01-19'], ['entity_id' => 9, 'product_id' => 425, 'city' => 18, 'sort_order' => 9, 'deal_type_id' => 'dom', 'deal_from_date' => '2013-12-18', 'deal_to_date' => '2025-02-19'] ]; usort($array, function ($entry1, $entry2) { return new \DateTime($entry1['deal_from_date']) <=> new \DateTime($entry2['deal_from_date']) ?: (new \DateTime($entry2['deal_to_date']) <=> new \DateTime($entry1['deal_to_date'])); }); print_r($array);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/esc9Q
function name:  (null)
number of ops:  10
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
   18     1        INIT_FCALL                                               'usort'
          2        SEND_REF                                                 !0
          3        DECLARE_LAMBDA_FUNCTION                          ~2      [0]
   21     4        SEND_VAL                                                 ~2
   18     5        DO_ICALL                                                 
   23     6        INIT_FCALL                                               'print_r'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > 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/esc9Q
function name:  {closure}
number of ops:  28
compiled vars:  !0 = $entry1, !1 = $entry2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   18     0  E >   RECV                                             !0      
          1        RECV                                             !1      
   19     2        NEW                                              $2      'DateTime'
          3        CHECK_FUNC_ARG                                           
          4        FETCH_DIM_FUNC_ARG                               $3      !0, 'deal_from_date'
          5        SEND_FUNC_ARG                                            $3
          6        DO_FCALL                                      0          
          7        NEW                                              $5      'DateTime'
          8        CHECK_FUNC_ARG                                           
          9        FETCH_DIM_FUNC_ARG                               $6      !1, 'deal_from_date'
         10        SEND_FUNC_ARG                                            $6
         11        DO_FCALL                                      0          
         12        SPACESHIP                                        ~8      $2, $5
         13        JMP_SET                                          ~9      ~8, ->26
   20    14        NEW                                              $10     'DateTime'
         15        CHECK_FUNC_ARG                                           
         16        FETCH_DIM_FUNC_ARG                               $11     !1, 'deal_to_date'
         17        SEND_FUNC_ARG                                            $11
         18        DO_FCALL                                      0          
         19        NEW                                              $13     'DateTime'
         20        CHECK_FUNC_ARG                                           
         21        FETCH_DIM_FUNC_ARG                               $14     !0, 'deal_to_date'
         22        SEND_FUNC_ARG                                            $14
         23        DO_FCALL                                      0          
         24        SPACESHIP                                        ~16     $10, $13
         25        QM_ASSIGN                                        ~9      ~16
         26      > RETURN                                                   ~9
   21    27*     > RETURN                                                   null

End of Dynamic Function 0

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