What best practices can be implemented to improve the efficiency and readability of the PHP code discussed in the forum thread?

The PHP code discussed in the forum thread can be improved by following best practices such as using meaningful variable names, breaking down complex logic into smaller functions, and properly commenting the code for clarity. By implementing these practices, the efficiency and readability of the code can be significantly enhanced.

// Original code snippet
$var1 = 10;
$var2 = 20;

$result = $var1 + $var2;

// Improved code snippet
$firstNumber = 10;
$secondNumber = 20;

function addNumbers($num1, $num2) {
    return $num1 + $num2;
}

$result = addNumbers($firstNumber, $secondNumber);