3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regexp = '/^ba\/r$/ui'; $regexpModifiers = substr(strrchr($regexp, "/"), 1); var_dump(strstr($regexpModifiers, 'i'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Sfk43
function name:  (null)
number of ops:  18
compiled vars:  !0 = $regexp, !1 = $regexpModifiers
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%2F%5Eba%5C%2Fr%24%2Fui'
    5     1        INIT_FCALL                                               'substr'
          2        INIT_FCALL                                               'strrchr'
          3        SEND_VAR                                                 !0
          4        SEND_VAL                                                 '%2F'
          5        DO_ICALL                                         $3      
          6        SEND_VAR                                                 $3
          7        SEND_VAL                                                 1
          8        DO_ICALL                                         $4      
          9        ASSIGN                                                   !1, $4
    7    10        INIT_FCALL                                               'var_dump'
         11        INIT_FCALL                                               'strstr'
         12        SEND_VAR                                                 !1
         13        SEND_VAL                                                 'i'
         14        DO_ICALL                                         $6      
         15        SEND_VAR                                                 $6
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
142.65 ms | 1394 KiB | 21 Q