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<?php $array = [ ['columnName' => 3], ['columnName' => 4], ['columnName' => 1], ['columnName' => 3], ['columnName' => 2], ['columnName' => 5] ]; $direction = 'asc'; $factor = $direction === 'desc' ? -1 : 1; $c = 'columnName'; usort( $array, fn($a, $b) => $factor * ($a[$c] <=> $b[$c]) ); var_export($array);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 6
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/M2d86
function name:  (null)
number of ops:  20
compiled vars:  !0 = $array, !1 = $direction, !2 = $factor, !3 = $c
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
   12     1        ASSIGN                                                       !1, 'asc'
   13     2        IS_IDENTICAL                                                 !1, 'desc'
          3      > JMPZ                                                         ~6, ->6
          4    >   QM_ASSIGN                                            ~7      -1
          5      > JMP                                                          ->7
          6    >   QM_ASSIGN                                            ~7      1
          7    >   ASSIGN                                                       !2, ~7
   14     8        ASSIGN                                                       !3, 'columnName'
   16     9        INIT_FCALL                                                   'usort'
   17    10        SEND_REF                                                     !0
   18    11        DECLARE_LAMBDA_FUNCTION                              ~10     [0]
         12        BIND_LEXICAL                                                 ~10, !2
         13        BIND_LEXICAL                                                 ~10, !3
   19    14        SEND_VAL                                                     ~10
   16    15        DO_ICALL                                                     
   21    16        INIT_FCALL                                                   'var_export'
         17        SEND_VAR                                                     !0
         18        DO_ICALL                                                     
         19      > RETURN                                                       1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/M2d86
function name:  {closure:/in/M2d86:18}
number of ops:  10
compiled vars:  !0 = $a, !1 = $b, !2 = $factor, !3 = $c
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   18     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
          2        BIND_STATIC                                                  !2
          3        BIND_STATIC                                                  !3
          4        FETCH_DIM_R                                          ~4      !0, !3
          5        FETCH_DIM_R                                          ~5      !1, !3
          6        SPACESHIP                                            ~6      ~4, ~5
          7        MUL                                                  ~7      !2, ~6
          8      > RETURN                                                       ~7
   19     9*     > RETURN                                                       null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.5.0


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