Let’s start by breaking a myth: If you thought PHP is among some of the more insecure languages, think again! According to a report by W3Techs.com, almost 80% of websites are using PHP as their server side programming language. And Facebook is also one of them! As for security, even C, .NET, Java or Python are not fully secure. There is NO such thing as a “fool proof” programming language. Therefore, a programmer’s goal shouldn’t be to create a “completely secure” application. Rather, it should be to create an application that is very difficult to penetrate into, such that the attacker finally gives up or gets caught. Here you can get practical tips on how to develop secure PHP applications.
Rules for a Secure PHP Application
PHP application security protection boils down to two simple rules which can make your code harder to break. These are:
1. Validating input
2. Filtering output
You would probably think, is that it? The answer is yes. And the reason thereof, is that these rules tend to drastically trim down the amount of easily exploitable code you may write. Therefore, it ensures that your application responds in a way that you intended regardless of who is interacting with it or how.
Validating input is as simple as just checking whether the input value given by user is valid or not. Whether it is an email or age, make sure that valid email is given and age is entered as an integer. These small practices are annoying but implementing these may save you a lot of trouble later on.
Similarly, filtering output must not be ignored. Although it is a tedious task nonetheless, since you have to check not only output data but also input data. This is crucial because some of the worst application behaviors have been reported due to unfiltered output induced by input values. Common attacks such as session persistent cross-site scripting, hijacking, XSS and XSRF are caused due to insufficient filtering of output.
There are many other ways of ensuring security of your PHP applications and certainly, this is not the only thing you should try to maintain it. However, covering these bare necessities for your applications can greatly reduce the possibility and impact of a malicious attack. Know more about PHP Application Development and Security by taking up a specialized training boot camp from Koenig Solutions that covers all aspects of handling security of your applications. Get satisfaction by learning how to build strong defenses for your application’s health with this course.