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<?php $a = [0 => '0', 'a' => 'a']; ksort($a); var_dump($a); $a = ['a' => 'a', 0 => '0']; ksort($a); var_dump($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/SJcMB
function name:  (null)
number of ops:  15
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'ksort'
          2        SEND_REF                                                 !0
          3        DO_ICALL                                                 
    7     4        INIT_FCALL                                               'var_dump'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                                 
    9     7        ASSIGN                                                   !0, <array>
   11     8        INIT_FCALL                                               'ksort'
          9        SEND_REF                                                 !0
         10        DO_ICALL                                                 
   13    11        INIT_FCALL                                               'var_dump'
         12        SEND_VAR                                                 !0
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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