3v4l.org

run code in 200+ php & hhvm versions
<?php $arr = array("D"=>"dog","a"=>"cat","A"=>"moose","d"=>"mouse"); ksort($arr, $sort_flags=SORT_FLAG_CASE); var_dump($arr);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/kV21S
function name:  (null)
number of ops:  10
compiled vars:  !0 = $arr, !1 = $sort_flags
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   4     0  E >   ASSIGN                                                   !0, <array>
   6     1        INIT_FCALL                                               'ksort'
         2        SEND_REF                                                 !0
         3        ASSIGN                                           $3      !1, 8
         4        SEND_VAR                                                 $3
         5        DO_ICALL                                                 
   8     6        INIT_FCALL                                               'var_dump'
         7        SEND_VAR                                                 !0
         8        DO_ICALL                                                 
         9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0