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<?php $dud = [[2,3,"2018-07-19","08:23",1], [2,3,"2018-07-19","08:30",2], [2,1,"2018-07-19","08:14",3], [2,4,"2018-07-19","07:11",4], [2,1,"2018-07-19","07:17",5], [2,9,"2018-07-19","07:31",6], [2,4,"2018-07-19","05:06",7], [2,6,"2018-07-18","08:10",8], [2,9,"2018-07-19","07:20",9], [1,7,"2018-07-19","08:27",10], [1,5,"2018-07-19","08:11",11], [1,7,"2018-07-18","08:22",12], [1,5,"2018-07-19","08:09",13], [2,6,"2018-07-18","07:12",14], [1,7,"2018-07-18","08:21",15], [1,7,"2018-07-19","07:09",16]]; array_multisort( array_column($dud, 3), array_column($dud, 2), array_column($dud, 1), array_column($dud, 0), $dud ); var_export($dud);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qNJ9g
function name:  (null)
number of ops:  28
compiled vars:  !0 = $dud
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   20     1        INIT_FCALL                                               'array_multisort'
   21     2        INIT_FCALL                                               'array_column'
          3        SEND_VAR                                                 !0
          4        SEND_VAL                                                 3
          5        DO_ICALL                                         $2      
          6        SEND_VAL                                                 $2
   22     7        INIT_FCALL                                               'array_column'
          8        SEND_VAR                                                 !0
          9        SEND_VAL                                                 2
         10        DO_ICALL                                         $3      
         11        SEND_VAL                                                 $3
   23    12        INIT_FCALL                                               'array_column'
         13        SEND_VAR                                                 !0
         14        SEND_VAL                                                 1
         15        DO_ICALL                                         $4      
         16        SEND_VAL                                                 $4
   24    17        INIT_FCALL                                               'array_column'
         18        SEND_VAR                                                 !0
         19        SEND_VAL                                                 0
         20        DO_ICALL                                         $5      
         21        SEND_VAL                                                 $5
   25    22        SEND_REF                                                 !0
   20    23        DO_ICALL                                                 
   28    24        INIT_FCALL                                               'var_export'
         25        SEND_VAR                                                 !0
         26        DO_ICALL                                                 
         27      > RETURN                                                   1

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