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<?php $arr = new ArrayIterator([]); $regex = new RegexIterator($arr, '/^test/'); var_dump($regex->getMode(), $regex->getFlags(), $regex->getPregFlags());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/cRmui
function name:  (null)
number of ops:  21
compiled vars:  !0 = $arr, !1 = $regex
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   NEW                                                  $2      'ArrayIterator'
          1        SEND_VAL_EX                                                  <array>
          2        DO_FCALL                                          0          
          3        ASSIGN                                                       !0, $2
    3     4        NEW                                                  $5      'RegexIterator'
          5        SEND_VAR_EX                                                  !0
          6        SEND_VAL_EX                                                  '%2F%5Etest%2F'
          7        DO_FCALL                                          0          
          8        ASSIGN                                                       !1, $5
    6     9        INIT_FCALL                                                   'var_dump'
         10        INIT_METHOD_CALL                                             !1, 'getMode'
         11        DO_FCALL                                          0  $8      
         12        SEND_VAR                                                     $8
         13        INIT_METHOD_CALL                                             !1, 'getFlags'
         14        DO_FCALL                                          0  $9      
         15        SEND_VAR                                                     $9
         16        INIT_METHOD_CALL                                             !1, 'getPregFlags'
         17        DO_FCALL                                          0  $10     
         18        SEND_VAR                                                     $10
         19        DO_ICALL                                                     
         20      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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