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<?php $array = [ ['ID' => 1, 'title' => 'Boring Meeting', 'date_start' => '2010-07-30', 'event_type' => 'meeting', 'state' => 'new-york'], ['ID' => 2, 'title' => 'Find My Stapler', 'date_start' => '2010-07-22', 'event_type' => 'meeting', 'state' => 'new-york'], ['ID' => 3, 'title' => 'Mario Party', 'date_start' => '2010-07-22', 'event_type' => 'party', 'state' => 'new-york'], ['ID' => 4, 'title' => 'Duct Tape Party', 'date_start' => '2010-07-28', 'event_type' => 'party', 'state' => 'california'] ]; array_multisort( array_column($array, 'state'), array_column($array, 'event_type'), array_column($array, 'date_start'), $array ); var_export($array);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3DaOq
function name:  (null)
number of ops:  23
compiled vars:  !0 = $array
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, <array>
    9     1        INIT_FCALL                                                   'array_multisort'
   10     2        INIT_FCALL                                                   'array_column'
          3        SEND_VAR                                                     !0
          4        SEND_VAL                                                     'state'
          5        DO_ICALL                                             $2      
          6        SEND_VAL                                                     $2
   11     7        INIT_FCALL                                                   'array_column'
          8        SEND_VAR                                                     !0
          9        SEND_VAL                                                     'event_type'
         10        DO_ICALL                                             $3      
         11        SEND_VAL                                                     $3
   12    12        INIT_FCALL                                                   'array_column'
         13        SEND_VAR                                                     !0
         14        SEND_VAL                                                     'date_start'
         15        DO_ICALL                                             $4      
         16        SEND_VAL                                                     $4
   13    17        SEND_REF                                                     !0
    9    18        DO_ICALL                                                     
   16    19        INIT_FCALL                                                   'var_export'
         20        SEND_VAR                                                     !0
         21        DO_ICALL                                                     
         22      > RETURN                                                       1

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