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