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<?php $array = [ ['array-5', 0], ['array-7', -.5], ['array-4', 0], ['array-1',-1], ['array-3', 2], ['array-6', .5], ['array-2', 3], ['array-8', -2] ]; usort( $array, fn($a, $b) => ($b[1] < 0 <=> $a[1] < 0) ?: (abs($b[1]) <=> abs($a[1])) ); var_export($array);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9qXnA
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>
   14     1        INIT_FCALL                                               'usort'
   15     2        SEND_REF                                                 !0
   16     3        DECLARE_LAMBDA_FUNCTION                          ~2      [0]
   18     4        SEND_VAL                                                 ~2
   14     5        DO_ICALL                                                 
   19     6        INIT_FCALL                                               'var_export'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > 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/9qXnA
function name:  {closure}
number of ops:  20
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   16     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        FETCH_DIM_R                                      ~2      !1, 1
          3        IS_SMALLER                                       ~3      ~2, 0
          4        FETCH_DIM_R                                      ~4      !0, 1
          5        IS_SMALLER                                       ~5      ~4, 0
          6        SPACESHIP                                        ~6      ~3, ~5
          7        JMP_SET                                          ~7      ~6, ->18
   17     8        INIT_FCALL                                               'abs'
          9        FETCH_DIM_R                                      ~8      !1, 1
         10        SEND_VAL                                                 ~8
         11        DO_ICALL                                         $9      
         12        INIT_FCALL                                               'abs'
         13        FETCH_DIM_R                                      ~10     !0, 1
         14        SEND_VAL                                                 ~10
         15        DO_ICALL                                         $11     
         16        SPACESHIP                                        ~12     $9, $11
         17        QM_ASSIGN                                        ~7      ~12
         18      > RETURN                                                   ~7
   18    19*     > RETURN                                                   null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.0.0


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