How can understanding the basics of PHP improve the efficiency of coding tasks like calculating averages?

Understanding the basics of PHP can improve the efficiency of coding tasks like calculating averages by utilizing built-in functions and language features. For example, PHP provides functions like array_sum() and count() that can be used to easily calculate averages without having to write complex loops.

// Calculate the average of an array of numbers using built-in PHP functions
$numbers = [10, 20, 30, 40, 50];
$average = array_sum($numbers) / count($numbers);

echo "The average is: " . $average;