3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'PT3M'; $pattern = '/[0-9]+/i'; $replacement = '#'; echo preg_replace($pattern, $replacement, $string); $pattern = '/[0-9]+/i'; $replacement = '/[0-9]+/i'; echo preg_replace($pattern, $replacement, $string);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9QkLG
function name:  (null)
number of ops:  18
compiled vars:  !0 = $string, !1 = $pattern, !2 = $replacement
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'PT3M'
    4     1        ASSIGN                                                   !1, '%2F%5B0-9%5D%2B%2Fi'
    5     2        ASSIGN                                                   !2, '%23'
    6     3        INIT_FCALL                                               'preg_replace'
          4        SEND_VAR                                                 !1
          5        SEND_VAR                                                 !2
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                         $6      
          8        ECHO                                                     $6
    8     9        ASSIGN                                                   !1, '%2F%5B0-9%5D%2B%2Fi'
    9    10        ASSIGN                                                   !2, '%2F%5B0-9%5D%2B%2Fi'
   10    11        INIT_FCALL                                               'preg_replace'
         12        SEND_VAR                                                 !1
         13        SEND_VAR                                                 !2
         14        SEND_VAR                                                 !0
         15        DO_ICALL                                         $9      
         16        ECHO                                                     $9
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
160.33 ms | 1386 KiB | 15 Q