| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | $Source = "anything"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  | $Replace = "anything"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  | ///////////// No warning generated: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | // Different quote styles. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | preg_replace("/double-quoted/", $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | preg_replace('/single-quoted/', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | // Different regex markers. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | preg_replace('#hash-chars (common)#', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | preg_replace('!exclamations (why not?!', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | // Safe modifiers | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | preg_replace('/some text/mS', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | preg_replace('#some text#gi', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | // E modifier doesn't exist, but should not trigger error. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | preg_replace('//E', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | // Multi-line example (issue #83) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | $text = preg_replace( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |     '/(?<!\\\\)     # not preceded by a backslash | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |       <             # an open bracket | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |       (             # start capture | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |         \/?         # optional backslash | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |         collapse    # the string collapse | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |         [^>]*       # everything up to the closing angle bracket; note that you cannot use one inside the tag! | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |       )             # stop capture | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |       >             # close bracket | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |     /ix', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |     '[$1]', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |     $text | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |   ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | // Multi-line with /e in comments. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | preg_replace( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |         '/.*     # /e in a comment | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |         /x', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |     $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | // Escaped /e | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  | preg_replace('/\/e/', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  | ///////////// Warning generated: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | // Different quote styles. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | preg_replace("/double-quoted/e", $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  | preg_replace('/single-quoted/e', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | // Different regex markers. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  | preg_replace('#hash-chars (common)#e', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | preg_replace('!exclamations (why not?!e', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | // Other modifiers with /e | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | preg_replace('/some text/emS', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  | preg_replace('/some text/meS', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  | preg_replace('/some text/mSe', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  | // Multi-line example (issue #83) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | $text = preg_replace( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |     '/(?<!\\\\)     # not preceded by a backslash | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |       <             # an open bracket | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |       (             # start capture | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |         \/?         # optional backslash | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |         collapse    # the string collapse | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |         [^>]*       # everything up to the closing angle bracket; note that you cannot use one inside the tag! | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |       )             # stop capture | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |       >             # close bracket | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |     /iex', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |     '[$1]', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |     $text | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |   ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | // Multi-line with /e in comments. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | preg_replace( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |         '/.*     # /e in a comment | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |         /xe', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |     $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | // Escaped /e | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | preg_replace('/\/e/e', $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  | ///////////// Untestable - should not generate an error. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | $Regex = "/anything/"; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 89 |  |  | define("X_REGEX_Xe", "/anything/"); | 
            
                                                                        
                            
            
                                    
            
            
                | 90 |  |  | function XRegeXe() { | 
            
                                                                        
                            
            
                                    
            
            
                | 91 |  |  |     return "/anything/"; | 
            
                                                                        
                            
            
                                    
            
            
                | 92 |  |  | } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | preg_replace($Regex, $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | preg_replace(XRegeXe(), $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  | preg_replace(X_REGEX_Xe, $Replace, $Source); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  | // Using bracket delimiters | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  | preg_replace('{\d}e', $Replace, $Source); //bad | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  | preg_replace('{\d{2}}e', $Replace, $Source); //bad | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  | preg_replace('{\d{2}e}', $Replace, $Source); //good | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  | preg_replace('\d{2}e', $Replace, $Source); // good | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 103 |  |  | preg_replace('{^fopen(.*?): }', $Replace, $Source); //good - monolog example | 
            
                                                        
            
                                    
            
            
                | 104 |  |  |  |