How can developers avoid common pitfalls when using dynamic evaluation functions like eval() in PHP applications?

Developers can avoid common pitfalls when using dynamic evaluation functions like eval() in PHP applications by carefully validating and sanitizing input to prevent code injection attacks. It is crucial to avoid using eval() with user-controlled data to prevent security vulnerabilities. 

$user_input = $_POST['user_input'];
$validated_input = filter_var($user_input, FILTER_SANITIZE_STRING);

eval("echo 'Validated input: ' . $validated_input;");

Keywords

eval dynamic evaluation security vulnerabilities code injection PHP applications

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