3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "aaaaaaaaaaaaaaaababababababababa"; while(strpos($a, "aa") ||strpos($a, "ba")) { $a = str_replace(array("aa", "ba"), "a", $a); } echo $a;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 8
Branch analysis from position: 8
2 jumps found. (Code = 47) Position 1 = 13, Position 2 = 18
Branch analysis from position: 13
2 jumps found. (Code = 44) Position 1 = 19, Position 2 = 2
Branch analysis from position: 19
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 2
2 jumps found. (Code = 47) Position 1 = 13, Position 2 = 18
Branch analysis from position: 13
Branch analysis from position: 18
Branch analysis from position: 18
filename:       /in/9tGfR
function name:  (null)
number of ops:  21
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'aaaaaaaaaaaaaaaababababababababa'
    3     1      > JMP                                                      ->8
    5     2    >   INIT_FCALL                                               'str_replace'
          3        SEND_VAL                                                 <array>
          4        SEND_VAL                                                 'a'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $2      
          7        ASSIGN                                                   !0, $2
    3     8    >   INIT_FCALL                                               'strpos'
          9        SEND_VAR                                                 !0
         10        SEND_VAL                                                 'aa'
         11        DO_ICALL                                         $4      
         12      > JMPNZ_EX                                         ~5      $4, ->18
         13    >   INIT_FCALL                                               'strpos'
         14        SEND_VAR                                                 !0
         15        SEND_VAL                                                 'ba'
         16        DO_ICALL                                         $6      
         17        BOOL                                             ~5      $6
         18    > > JMPNZ                                                    ~5, ->2
    7    19    >   ECHO                                                     !0
         20      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
184.64 ms | 1400 KiB | 17 Q