How can context switching in PHP code impact the functionality and security of a web application?

Context switching in PHP code can impact the functionality and security of a web application by potentially introducing vulnerabilities such as data leakage or injection attacks. To mitigate these risks, it's important to properly sanitize input data, validate user permissions, and use secure coding practices. 

// Example of sanitizing input data to prevent SQL injection
$user_input = $_POST['input'];
$clean_input = mysqli_real_escape_string($conn, $user_input);

Keywords

context switching PHP code functionality security web application

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