What can be potential issues when working with superglobals in PHP?
- Insecure usage can lead to security vulnerabilities.
- Unexpected data manipulation due to variable scoping.
- Naming conflicts with user-defined variables.
- All of the above.
The correct option is 4. When working with superglobals in PHP, potential issues can arise. Insecure usage of superglobals, such as $_POST or $_GET, can lead to security vulnerabilities, such as injection attacks or data tampering. It is crucial to properly validate and sanitize any data obtained from superglobals before using it. Another potential issue is unexpected data manipulation due to variable scoping. Modifying the values of superglobals directly can have unintended consequences, as they are accessible from various parts of the script. Additionally, there can be naming conflicts with user-defined variables if they have the same name as a superglobal, leading to unexpected behavior. It is important to handle superglobals with caution, following best practices to ensure the security and integrity of the application. Learn more: https://www.php.net/manual/en/language.variables.superglobals.php
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