The web server may relay the request to a backend database to retrieve specific information. For example, when you fill a website signup form, the web server reads the data. SQL is a language used to interact with databases to store and retrieve information. Top 7 PHP Security Issues And Vulnerabilities & How To Avoid Them 1. Read on to learn how to mitigate some of the most prevalent PHP vulnerabilities or avoid them entirely. And indeed, as recent research demonstrates, many PHP applications suffer from vulnerabilities due to bad design and lackluster understanding of basic security practices required to secure a web application. The massive PHP install base and an active development community drew security researchers and malicious actors looking for systems to exploit. This popularity has, in turn, introduced a new challenge: PHP security. Without much fanfare, PHP has become the de-facto technology underlying most of the web as we know it today. 78.9% of all the websites whose server-side programming language we know are powered by PHP behind the scenes.
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