sql-injection

I have 2 pages on the website, one is index.php and index page list all posts that exist in database, and other page is post.php and post page display single post when clicked on specific post on index page. Now the code that i used to list all posts on index.php is: $postslist = mysqli_query($db, "SELECT * FROM posts"); while ($post = mysqli_fetch_array($postlist)) { echo '<a href="' .SITEURL.'/post.php?p='.$post['postid'].'>'.$post['title'].'</a>'; } And this works and i have all posts displayed on my index.php page and links link to post on post.php page. And on post.php page i have used

How can i able to update a table in a MySQL database using SQL Injection ? I have heard about how we can enter the query in the address bar and it is possible to update a table in the MySQL database. But I am not sure about it. Kindly give me an idea professionals... Daniel Vassallo You may want to try entering Robert'); DROP TABLE students; -- in your form :) In the above xkcd cartoon , Bobby was probably asked to fill in his name in a form, but he mischievously inserted Robert'); DROP TABLE students; -- as his name. Now imagine if that input was used in this query: SELECT * FROM students

In php, what is the difference and which is better and why, using mysqli. I have a whole project written with real escape string, is it necessary to convert to object oriented prepared statements? From the programmers point of view, the difference between escaping the values manually and parameterized/prepared statements as implemented by PDO is the degree of separation, automation, and a shift of responsibility. With *_escape_string the developer has to ensure that all values: are passed through the corresponding *_escape_string function and are placed within SQL string literals, as the *

I am using ASP Classic and SQL Server 2000 to create dynamic websites. I am a bit confused about when to use a recordset object and when to use a command object when querying the database. I was told that if the stored procedure would be returning records from a SELCT statement then I should use a recordset, however if I am up updating or inserting then I should use a command object and pass all data as parameters to the stored procedure. When using a recordset I often pass any required data like so: rs.Source = "spTest " & id I alway validate the data that I am passing to make sure it is what

In a comment on a previous question, someone said that the following sql statement opens me up to sql injection: select ss.*, se.name as engine, ss.last_run_at + interval ss.refresh_frequency day as next_run_at, se.logo_name from searches ss join search_engines se on ss.engine_id = se.id where ss.user_id='.$user_id.' group by ss.id order by ss.project_id, ss.domain, ss.keywords Assuming that the $userid variable is properly escaped, how does this make me vulnerable, and what can I do to fix it? Assuming it is properly escaped, it doesn't make you vulnerable. The thing is that escaping properly

One thing that's always confused me is input escaping and whether or not you're protected from attacks like SQL injection. Say I have a form which sends data using HTTP POST to a PHP file. I type the following in an input field and submit the form: "Hello", said Jimmy O'Toole. If you print/echo the input on the PHP page that receives this POST data, it comes out as: \"Hello\", said Jimmy O\'Toole. This is the point where it gets confusing. If I put this input string into (My)SQL and execute it, it'll go into the database fine (since quotes are escaped), but would that stop SQL injection? If I