If you are working on PHP, then definitely you are familiar with Fatal Error Allowed memory size exhausted. This error occurs when your PHP script exceeds the default memory allocated for execution. Due to which your scripts stop working and shows the error message that allowed memory size exhausted.
To know the default memory allocated for execution, you can check the memory limit in your php.ini file.
In my previous post, i have written about What is sql injection and how to prevent it. In this article, you will learn about some popular tools which is used to detect Sql Injection vulnerability.
What is SQL injection and how to prevent them in your web application
In top ten PHP Security Vulnerabilities list, SQL injection hits the number one position. In SQL Injection, an attacker executes or pass malicious SQL statements through which they can either steal your data or completely destroy it. This data is passed through the browser to your web application. It occurs mainly if your input data is not validated properly.
To understand, how unvalidated data can cause such a big problem, let’s understand this through example.
Suppose, You have written a code for login module. In login module, A user enters a username and password. Based on username and password your script allows a user to log in.