3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $s = "R&ouml;mer"; $rest = "R&ouml;mer"; $result = "R&ouml;mer"; do { $rest = stristr($rest,$s); echo "rest: $rest\n"; $replace = substr($rest,0,strlen($s)); echo "replace: $replace\n"; $result = str_replace($replace,"<span class='textHighlight'>{$replace}</span>",$result); echo "result: $result\n"; $rest = substr($rest,strlen($s)); echo "rest': $rest\n"; } while ($rest !== false); echo $result;
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = 48, Position 2 = 3
Branch analysis from position: 48
Jump found. Position 1 = -2
Branch analysis from position: 3
filename:       /in/FF3q6
function name:  (null)
number of ops:  50
compiled vars:  !0 = $s, !1 = $rest, !2 = $result, !3 = $replace
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   ASSIGN                                                   !0, 'R%26ouml%3Bmer'
   4     1        ASSIGN                                                   !1, 'R%26ouml%3Bmer'
   5     2        ASSIGN                                                   !2, 'R%26ouml%3Bmer'
   7     3    >   INIT_FCALL                                               'stristr'
         4        SEND_VAR                                                 !1
         5        SEND_VAR                                                 !0
         6        DO_ICALL                                         $7      
         7        ASSIGN                                                   !1, $7
   8     8        ROPE_INIT                                     3  ~10     'rest%3A+'
         9        ROPE_ADD                                      1  ~10     ~10, !1
        10        ROPE_END                                      2  ~9      ~10, '%0A'
        11        ECHO                                                     ~9
   9    12        INIT_FCALL                                               'substr'
        13        SEND_VAR                                                 !1
        14        SEND_VAL                                                 0
        15        STRLEN                                           ~12     !0
        16        SEND_VAL                                                 ~12
        17        DO_ICALL                                         $13     
        18        ASSIGN                                                   !3, $13
  10    19        ROPE_INIT                                     3  ~16     'replace%3A+'
        20        ROPE_ADD                                      1  ~16     ~16, !3
        21        ROPE_END                                      2  ~15     ~16, '%0A'
        22        ECHO                                                     ~15
  11    23        INIT_FCALL                                               'str_replace'
        24        SEND_VAR                                                 !3
        25        ROPE_INIT                                     3  ~19     '%3Cspan+class%3D%27textHighlight%27%3E'
        26        ROPE_ADD                                      1  ~19     ~19, !3
        27        ROPE_END                                      2  ~18     ~19, '%3C%2Fspan%3E'
        28        SEND_VAL                                                 ~18
        29        SEND_VAR                                                 !2
        30        DO_ICALL                                         $21     
        31        ASSIGN                                                   !2, $21
  12    32        ROPE_INIT                                     3  ~24     'result%3A+'
        33        ROPE_ADD                                      1  ~24     ~24, !2
        34        ROPE_END                                      2  ~23     ~24, '%0A'
        35        ECHO                                                     ~23
  13    36        INIT_FCALL                                               'substr'
        37        SEND_VAR                                                 !1
        38        STRLEN                                           ~26     !0
        39        SEND_VAL                                                 ~26
        40        DO_ICALL                                         $27     
        41        ASSIGN                                                   !1, $27
  14    42        ROPE_INIT                                     3  ~30     'rest%27%3A+'
        43        ROPE_ADD                                      1  ~30     ~30, !1
        44        ROPE_END                                      2  ~29     ~30, '%0A'
        45        ECHO                                                     ~29
  15    46        IS_NOT_IDENTICAL                                 ~32     !1, <false>
        47      > JMPNZ                                                    ~32, ->3
  16    48    >   ECHO                                                     !2
        49      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.2.0