![]() However, we've already looked at both the LIKE operator and FULLTEXT indexes, so you should know that you can modify the query to be much more helpful by doing this:ĪLTER TABLE webpages ADD FULLTEXT (Title) ĪLTER TABLE webpages ADD FULLTEXT (Content) Our first attempt above is a little too simple - it will only return pages that match the exact submission from users. ![]() With that table structure, it is very easy to create a simple search engine for the site. ![]() You'd need to create your table something like this:ĬREATE TABLE webpages (ID INT AUTO_INCREMENT PRIMARY KEY, Title VARCHAR(255), Content TEXT, DateModified INT) Imagine for a moment you stored all the pages in your website in an SQL database. The example above shows how easy it is to modify your SQL queries to respond directly to user submission. Print "Your search for $SearchCriteria yielded $numhits results" $result = mysqli_query($db, "SELECT ID FROM webpages WHERE Title = '$SearchCriteria' ") $numhits = mysqli_num_rows($result) Given that the parameter for mysqli_query() is just a string, we can use variables as we would in any other string - if the string is double-quoted, it is simply a matter of using the variable directly inside it, as PHP will convert it to its value automatically. We have already looked at creating forms to accept user input using HTML forms, and now we're going to look at how to accept that data and use it inside our table. Now we come to the really fun stuff: changing the query sent to MySQL based upon user input. String mysqli_real_escape_string ( resource link, string unescaped_string)
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