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Are PDO prepared statements sufficient to prevent SQL injection?

Let's say I have code like this:

$dbh = new PDO("blahblah");

$stmt = $dbh->prepare('SELECT * FROM users where username = :username');
$stmt->execute( array(':username' => $_REQUEST['username']) );
The PDO documentation says:

The parameters to prepared statements don't need to be quoted; the driver handles it for you.
Is that truly all I need to do to avoid SQL injections? Is it really that easy?

You can assume MySQL if it makes a difference. Also, I'm really only curious about the use of prepared statements against SQL injection. In this context, I don't care about XSS or other possible vulnerabilities.

php security p

asked May 8, 2015 in PHP by rajesh
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answered May 8, 2015 by rajesh