What are some common pitfalls that PHP beginners may encounter when working with complex operators and constructs?

One common pitfall for PHP beginners when working with complex operators and constructs is not understanding operator precedence, which can lead to unexpected results. To solve this, always use parentheses to explicitly define the order of operations in complex expressions.

// Incorrect way without using parentheses
$result = 10 + 5 * 2; // Result will be 20 instead of 15

// Correct way using parentheses to specify the order of operations
$result = (10 + 5) * 2; // Result will be 30