using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(comment_approved\s=\s\'(?:1|0)\')|\(\s(comment_approved\s=\s'0'\sOR\scomment_approved\s=\s'1')\s\)";
string substitution = @"( $1$2 OR comment_approved = \'trash\' )";
string input = @"( comment_approved = '0' OR comment_approved = '1' ) AND ( (CAST(wp_72423799_commentmeta.meta_value AS SIGNED) >= '1409095998') ) AND (wp_72423799_commentmeta.meta_key = 'o2_comment_gmt_modified' )
";
Regex regex = new Regex(pattern);
string result = regex.Replace(input, substitution, 1);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx