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<?php $value = 5; $null = null; echo $null ?? $value; echo null ?? $value ?? $null; echo null ?? $null ?? value;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/YF085
function name:  (null)
number of ops:  17
compiled vars:  !0 = $value, !1 = $null
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 5
    4     1        ASSIGN                                                   !1, null
    6     2        COALESCE                                         ~4      !1
          3        QM_ASSIGN                                        ~4      !0
          4        ECHO                                                     ~4
    7     5        COALESCE                                         ~5      null
          6        COALESCE                                         ~6      !0
          7        QM_ASSIGN                                        ~6      !1
          8        QM_ASSIGN                                        ~5      ~6
          9        ECHO                                                     ~5
    8    10        COALESCE                                         ~7      null
         11        COALESCE                                         ~8      !1
         12        FETCH_CONSTANT                                   ~9      'value'
         13        QM_ASSIGN                                        ~8      ~9
         14        QM_ASSIGN                                        ~7      ~8
         15        ECHO                                                     ~7
         16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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