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<?php $y = null; $b = 5; $x = $y ?? $b; var_dump($x);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/PqupQ
function name:  (null)
number of ops:  9
compiled vars:  !0 = $y, !1 = $b, !2 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, null
    4     1        ASSIGN                                                   !1, 5
    5     2        COALESCE                                         ~5      !0
          3        QM_ASSIGN                                        ~5      !1
          4        ASSIGN                                                   !2, ~5
    7     5        INIT_FCALL                                               'var_dump'
          6        SEND_VAR                                                 !2
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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