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<?php $a = 1; $b = null; function test ($a, $b) {}
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Dsf7Q
function name:  (null)
number of ops:  3
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 1
    4     1        ASSIGN                                                   !1, null
    6     2      > RETURN                                                   1

Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Dsf7Q
function name:  test
number of ops:  3
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
          0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2      > RETURN                                                   null

End of function test

Generated using Vulcan Logic Dumper, using php 8.0.0


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