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<?php $array = [ [], ['2011','2010', '2012'], ['conference', 'journal', 'conference'], ]; function array_multisort_custom(array &$array, $columnKey, array $order) { // guard clause/condition if (!array_key_exists($columnKey, $array)) { throw new Exception('Nominated sorting column not found'); } // pad rows to consistent size $maxCount = max(array_map('count', $array)); array_walk($array, fn(&$row) => $row = array_pad($row, $maxCount, null)); // populate first sorting parameter with custom order array $priority = array_flip($order); $default = count($order); array_multisort( array_map(fn($v) => $priority[$v] ?? $default, $array[$columnKey]), ...$array ); } array_multisort_custom($array, 2, ['conference', 'journal']); var_export($array);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3Md9Z
function name:  (null)
number of ops:  10
compiled vars:  !0 = $array
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
   30     1        INIT_FCALL                                                   'array_multisort_custom'
          2        SEND_REF                                                     !0
          3        SEND_VAL                                                     2
          4        SEND_VAL                                                     <array>
          5        DO_FCALL                                          0          
   31     6        INIT_FCALL                                                   'var_export'
          7        SEND_VAR                                                     !0
          8        DO_ICALL                                                     
          9      > RETURN                                                       1

Function array_multisort_custom:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 10
Branch analysis from position: 6
1 jumps found. (Code = 108) Position 1 = -2
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3Md9Z
function name:  array_multisort_custom
number of ops:  44
compiled vars:  !0 = $array, !1 = $columnKey, !2 = $order, !3 = $maxCount, !4 = $priority, !5 = $default
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    9     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
          2        RECV                                                 !2      
   12     3        ARRAY_KEY_EXISTS                                     ~6      !1, !0
          4        BOOL_NOT                                             ~7      ~6
          5      > JMPZ                                                         ~7, ->10
   13     6    >   NEW                                                  $8      'Exception'
          7        SEND_VAL_EX                                                  'Nominated+sorting+column+not+found'
          8        DO_FCALL                                          0          
          9      > THROW                                             0          $8
   17    10    >   INIT_FCALL                                                   'max'
         11        INIT_FCALL                                                   'array_map'
         12        SEND_VAL                                                     'count'
         13        SEND_VAR                                                     !0
         14        DO_ICALL                                             $10     
         15        SEND_VAR                                                     $10
         16        DO_ICALL                                             $11     
         17        ASSIGN                                                       !3, $11
   18    18        INIT_FCALL                                                   'array_walk'
         19        SEND_REF                                                     !0
         20        DECLARE_LAMBDA_FUNCTION                              ~13     [0]
         21        BIND_LEXICAL                                                 ~13, !3
         22        SEND_VAL                                                     ~13
         23        DO_ICALL                                                     
   21    24        INIT_FCALL                                                   'array_flip'
         25        SEND_VAR                                                     !2
         26        DO_ICALL                                             $15     
         27        ASSIGN                                                       !4, $15
   22    28        COUNT                                                ~17     !2
         29        ASSIGN                                                       !5, ~17
   24    30        INIT_FCALL                                                   'array_multisort'
   25    31        INIT_FCALL                                                   'array_map'
         32        DECLARE_LAMBDA_FUNCTION                              ~19     [1]
         33        BIND_LEXICAL                                                 ~19, !4
         34        BIND_LEXICAL                                                 ~19, !5
         35        SEND_VAL                                                     ~19
         36        FETCH_DIM_R                                          ~20     !0, !1
         37        SEND_VAL                                                     ~20
         38        DO_ICALL                                             $21     
         39        SEND_VAL                                                     $21
   26    40        SEND_UNPACK                                                  !0
         41        CHECK_UNDEF_ARGS                                             
   24    42        DO_ICALL                                                     
   28    43      > RETURN                                                       null


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3Md9Z
function name:  {closure:array_multisort_custom():18}
number of ops:  10
compiled vars:  !0 = $row, !1 = $maxCount
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   18     0  E >   RECV                                                 !0      
          1        BIND_STATIC                                                  !1
          2        INIT_FCALL                                                   'array_pad'
          3        SEND_VAR                                                     !0
          4        SEND_VAR                                                     !1
          5        SEND_VAL                                                     null
          6        DO_ICALL                                             $2      
          7        ASSIGN                                               ~3      !0, $2
          8      > RETURN                                                       ~3
          9*     > RETURN                                                       null

End of Dynamic Function 0

Dynamic Function 1
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3Md9Z
function name:  {closure:array_multisort_custom():25}
number of ops:  8
compiled vars:  !0 = $v, !1 = $priority, !2 = $default
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   25     0  E >   RECV                                                 !0      
          1        BIND_STATIC                                                  !1
          2        BIND_STATIC                                                  !2
          3        FETCH_DIM_IS                                         ~3      !1, !0
          4        COALESCE                                             ~4      ~3
          5        QM_ASSIGN                                            ~4      !2
          6      > RETURN                                                       ~4
          7*     > RETURN                                                       null

End of Dynamic Function 1

End of function array_multisort_custom

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