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<?php $paymentData = [ 'subscription_number' => '0', ]; var_dump((string)++$paymentData['subscription_number']);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5DBPY
function name:  (null)
number of ops:  8
compiled vars:  !0 = $paymentData
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    7     1        INIT_FCALL                                               'var_dump'
          2        FETCH_DIM_RW                                     $2      !0, 'subscription_number'
          3        PRE_INC                                          ~3      $2
          4        CAST                                          6  ~4      ~3
          5        SEND_VAL                                                 ~4
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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