Are there any best practices for improving the effectiveness of the ValidValueDisplay class in PHP?

The ValidValueDisplay class in PHP can be improved by implementing error handling to gracefully handle invalid input values. This can be achieved by using try-catch blocks to catch any exceptions thrown during the validation process and displaying a user-friendly error message. Additionally, implementing input sanitization techniques such as filtering and validation functions can help improve the overall effectiveness of the ValidValueDisplay class. 

class ValidValueDisplay {
    public function displayValue($input) {
        try {
            // Validate input value
            if (!is_numeric($input)) {
                throw new Exception("Invalid input value. Please provide a numeric value.");
            }
            
            // Sanitize input value
            $sanitizedInput = filter_var($input, FILTER_SANITIZE_NUMBER_INT);
            
            // Display sanitized value
            echo "Sanitized input value: " . $sanitizedInput;
        } catch (Exception $e) {
            echo "Error: " . $e->getMessage();
        }
    }
}

// Example usage
$validValueDisplay = new ValidValueDisplay();
$validValueDisplay->displayValue("abc"); // Output: Error: Invalid input value. Please provide a numeric value.

Keywords

PHP ValidValueDisplay class effectiveness improvement best practices

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