What are the potential pitfalls of not understanding the basic concepts of PHP while trying to implement complex functionalities like calculating square roots?

Not understanding the basic concepts of PHP can lead to errors and unexpected results when trying to implement complex functionalities like calculating square roots. To avoid these pitfalls, it's essential to have a solid understanding of PHP syntax, functions, and mathematical operations before attempting complex calculations.

// Calculate square root using the sqrt function in PHP
$number = 16;
$square_root = sqrt($number);

echo "The square root of $number is $square_root";