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<?php $my_array = array( array("date" => "10/04/2019"), array("date" => "10/05/2017") ); usort($my_array, function ($a, $b) { return strtotime($a['date']) <=> strtotime($b['date']); }); print_r($my_array);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KGAIk
function name:  (null)
number of ops:  10
compiled vars:  !0 = $my_array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    8     1        INIT_FCALL                                               'usort'
          2        SEND_REF                                                 !0
          3        DECLARE_LAMBDA_FUNCTION                          ~2      [0]
   10     4        SEND_VAL                                                 ~2
    8     5        DO_ICALL                                                 
   12     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/KGAIk
function name:  {closure}
number of ops:  13
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    9     2        INIT_FCALL                                               'strtotime'
          3        FETCH_DIM_R                                      ~2      !0, 'date'
          4        SEND_VAL                                                 ~2
          5        DO_ICALL                                         $3      
          6        INIT_FCALL                                               'strtotime'
          7        FETCH_DIM_R                                      ~4      !1, 'date'
          8        SEND_VAL                                                 ~4
          9        DO_ICALL                                         $5      
         10        SPACESHIP                                        ~6      $3, $5
         11      > RETURN                                                   ~6
   10    12*     > RETURN                                                   null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.0.0


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