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

Generated using Vulcan Logic Dumper, using php 8.0.0


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