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<?php $data = [27, 38, 58, 82]; usort( $data, function ($a, $b) { echo "Comparing $a - $b", PHP_EOL; echo 'Element A should go ', (($a - $b < 0) ? 'before' : 'after'), ' element B'; return $a - $b; } );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/DVAqs
function name:  (null)
number of ops:  7
compiled vars:  !0 = $data
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'usort'
    6     2        SEND_REF                                                 !0
    7     3        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FDVAqs%3A7%240'
   11     4        SEND_VAL                                                 ~2
          5        DO_ICALL                                                 
   12     6      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FDVAqs%3A7%240:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 12, Position 2 = 14
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 15
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/DVAqs
function name:  {closure}
number of ops:  20
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    8     2        ROPE_INIT                                     4  ~3      'Comparing+'
          3        ROPE_ADD                                      1  ~3      ~3, !0
          4        ROPE_ADD                                      2  ~3      ~3, '+-+'
          5        ROPE_END                                      3  ~2      ~3, !1
          6        ECHO                                                     ~2
          7        ECHO                                                     '%0A'
    9     8        ECHO                                                     'Element+A+should+go+'
          9        SUB                                              ~5      !0, !1
         10        IS_SMALLER                                               ~5, 0
         11      > JMPZ                                                     ~6, ->14
         12    >   QM_ASSIGN                                        ~7      'before'
         13      > JMP                                                      ->15
         14    >   QM_ASSIGN                                        ~7      'after'
         15    >   ECHO                                                     ~7
         16        ECHO                                                     '+element+B'
   10    17        SUB                                              ~8      !0, !1
         18      > RETURN                                                   ~8
   11    19*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FDVAqs%3A7%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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