What best practices should be followed when dynamically adding elements to an array in PHP based on user input?

When dynamically adding elements to an array in PHP based on user input, it is important to validate and sanitize the user input to prevent security vulnerabilities such as injection attacks. Additionally, it is recommended to use functions like array_push() or the [] syntax to add elements to the array, ensuring proper handling of the data structure. Finally, consider implementing error handling to gracefully handle any potential issues that may arise during the process. 

// Assuming $userInput is the user-provided data
$userInput = $_POST['user_input'];

// Validate and sanitize the user input
$userInput = filter_var($userInput, FILTER_SANITIZE_STRING);

// Add the sanitized user input to the array
$myArray[] = $userInput;

Keywords

validation array_push array_merge array_splice input_sanitization

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