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<?php $arr = array ( 0 => array ( 'name' => 'Вася', 'start' => '11.12', 'end' => '15.12', ), 1 => array ( 'name' => 'Петя', 'start' => '08.11', 'end' => '10.12', ), 2 => array ( 'name' => 'Иван', 'start' => '26.11', 'end' => '29.12', ), ); usort($arr, fn($a, $b) => ($a['end'] >= $b['end']) ? -1 : 1); print_r($arr);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/NsFaI
function name:  (null)
number of ops:  10
compiled vars:  !0 = $arr
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   24     1        INIT_FCALL                                               'usort'
          2        SEND_REF                                                 !0
          3        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FNsFaI%3A24%240'
          4        SEND_VAL                                                 ~2
          5        DO_ICALL                                                 
   25     6        INIT_FCALL                                               'print_r'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FNsFaI%3A24%240:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/NsFaI
function name:  {closure}
number of ops:  11
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   24     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        FETCH_DIM_R                                      ~2      !0, 'end'
          3        FETCH_DIM_R                                      ~3      !1, 'end'
          4        IS_SMALLER_OR_EQUAL                                      ~3, ~2
          5      > JMPZ                                                     ~4, ->8
          6    >   QM_ASSIGN                                        ~5      -1
          7      > JMP                                                      ->9
          8    >   QM_ASSIGN                                        ~5      1
          9    > > RETURN                                                   ~5
         10*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FNsFaI%3A24%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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