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<?php /* $str = 'test1234'; preg_match_all('!\d+!', $str, $matches);*/ /*for ($matches = 0; $matches <9; $matches++) { $letters = range('a','j'); var_dump($letters[$matches]); }*/ $str = 'test1234'; $int = filter_var($str, FILTER_SANITIZE_NUMBER_INT); 
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/93tj1
function name:  (null)
number of ops:  7
compiled vars:  !0 = $str, !1 = $int
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   ASSIGN                                                   !0, 'test1234'
   13     1        INIT_FCALL                                               'filter_var'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 519
          4        DO_ICALL                                         $3      
          5        ASSIGN                                                   !1, $3
   18     6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0

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