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<?php $a = [ [ "time" => 1494182396, "id" => "1" ], [ "time" => 1494182067, "id" => "2" ] ]; usort( $a, function( $a, $b ) { return $a["time"] <=> $b["time"]; } ); var_dump( ["aufsteigend" => $a] ); usort( $a, function( $a, $b ) { return ($a["time"] <=> $b["time"]) * -1; } ); var_dump( ["absteigend" => $a] );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/nHtIO
function name:  (null)
number of ops:  20
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   14     1        INIT_FCALL                                               'usort'
          2        SEND_REF                                                 !0
          3        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FnHtIO%3A14%240'
          4        SEND_VAL                                                 ~2
          5        DO_ICALL                                                 
   15     6        INIT_FCALL                                               'var_dump'
          7        INIT_ARRAY                                       ~4      !0, 'aufsteigend'
          8        SEND_VAL                                                 ~4
          9        DO_ICALL                                                 
   17    10        INIT_FCALL                                               'usort'
         11        SEND_REF                                                 !0
         12        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FnHtIO%3A17%241'
         13        SEND_VAL                                                 ~6
         14        DO_ICALL                                                 
   18    15        INIT_FCALL                                               'var_dump'
         16        INIT_ARRAY                                       ~8      !0, 'absteigend'
         17        SEND_VAL                                                 ~8
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FnHtIO%3A14%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/nHtIO
function name:  {closure}
number of ops:  7
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   14     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        FETCH_DIM_R                                      ~2      !0, 'time'
          3        FETCH_DIM_R                                      ~3      !1, 'time'
          4        SPACESHIP                                        ~4      ~2, ~3
          5      > RETURN                                                   ~4
          6*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FnHtIO%3A14%240

Function %00%7Bclosure%7D%2Fin%2FnHtIO%3A17%241:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/nHtIO
function name:  {closure}
number of ops:  8
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   17     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        FETCH_DIM_R                                      ~2      !0, 'time'
          3        FETCH_DIM_R                                      ~3      !1, 'time'
          4        SPACESHIP                                        ~4      ~2, ~3
          5        MUL                                              ~5      ~4, -1
          6      > RETURN                                                   ~5
          7*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FnHtIO%3A17%241

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