What are some best practices for beginners to follow when developing PHP applications that involve complex data manipulation and display functionalities?

When developing PHP applications that involve complex data manipulation and display functionalities, beginners should follow best practices such as using object-oriented programming, separating concerns by implementing a clear structure (such as MVC pattern), sanitizing user input to prevent security vulnerabilities, and optimizing database queries for better performance. 

// Example of using object-oriented programming to handle complex data manipulation

class User {
    private $name;
    
    public function __construct($name) {
        $this->name = $name;
    }
    
    public function getName() {
        return $this->name;
    }
}

$user = new User('John Doe');
echo $user->getName(); // Output: John Doe

Keywords

data manipulation PHP applications complex functionalities beginners display functionalities

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