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<?php var_dump( preg_replace('/[^0-9]/', '', '123abc45'), preg_replace('/[^0-9]/', '', '123abc45', -1) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/bZeBl
function name:  (null)
number of ops:  13
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'var_dump'
    4     1        FRAMELESS_ICALL_3                preg_replace        ~0      '%2F%5B%5E0-9%5D%2F', ''
          2        OP_DATA                                                      '123abc45'
          3        SEND_VAL                                                     ~0
    5     4        INIT_FCALL                                                   'preg_replace'
          5        SEND_VAL                                                     '%2F%5B%5E0-9%5D%2F'
          6        SEND_VAL                                                     ''
          7        SEND_VAL                                                     '123abc45'
          8        SEND_VAL                                                     -1
          9        DO_ICALL                                             $1      
         10        SEND_VAR                                                     $1
    3    11        DO_ICALL                                                     
    6    12      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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