3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = ["a", "B", "æ", "Æ", "c", "A", "b", "C", "1"]; usort($foo, function($a, $b) { return [mb_strtoupper($a), $a] <=> [mb_strtoupper($b), $b]; }); var_export($foo);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/03tkA
function name:  (null)
number of ops:  10
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    4     1        INIT_FCALL                                               'usort'
          2        SEND_REF                                                 !0
          3        DECLARE_LAMBDA_FUNCTION                          ~2      [0]
    6     4        SEND_VAL                                                 ~2
    4     5        DO_ICALL                                                 
    8     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/03tkA
function name:  {closure}
number of ops:  15
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    5     2        INIT_FCALL                                               'mb_strtoupper'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5        INIT_ARRAY                                       ~3      $2
          6        ADD_ARRAY_ELEMENT                                ~3      !0
          7        INIT_FCALL                                               'mb_strtoupper'
          8        SEND_VAR                                                 !1
          9        DO_ICALL                                         $4      
         10        INIT_ARRAY                                       ~5      $4
         11        ADD_ARRAY_ELEMENT                                ~5      !1
         12        SPACESHIP                                        ~6      ~3, ~5
         13      > RETURN                                                   ~6
    6    14*     > RETURN                                                   null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
146.96 ms | 1007 KiB | 16 Q