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<?php $a = 'a'; $b = 'b'; var_dump(array_merge(array($a), array($b)));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/s8BSl
function name:  (null)
number of ops:  12
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'a'
    3     1        ASSIGN                                                   !1, 'b'
    4     2        INIT_FCALL                                               'var_dump'
          3        INIT_FCALL                                               'array_merge'
          4        INIT_ARRAY                                       ~4      !0
          5        SEND_VAL                                                 ~4
          6        INIT_ARRAY                                       ~5      !1
          7        SEND_VAL                                                 ~5
          8        DO_ICALL                                         $6      
          9        SEND_VAR                                                 $6
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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