What are common pitfalls for beginners when trying to implement PHP code in a website?

One common pitfall for beginners when trying to implement PHP code in a website is not properly escaping user input, which can lead to security vulnerabilities like SQL injection attacks. To solve this issue, always sanitize and validate user input before using it in your PHP code. 

// Example of sanitizing user input using the filter_var function
$user_input = $_POST['user_input'];
$clean_input = filter_var($user_input, FILTER_SANITIZE_STRING);

Keywords

syntax errors undefined variables SQL injection XSS attacks incorrect file paths

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