What potential pitfalls should be considered when parsing data in PHP?

One potential pitfall when parsing data in PHP is not properly sanitizing input data, which can lead to security vulnerabilities such as SQL injection or cross-site scripting attacks. To mitigate this risk, always validate and sanitize user input before processing it in your PHP code. 

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

Keywords

data parsing PHP security vulnerabilities input validation error handling

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