What are the potential pitfalls of documenting all variables in PHP code?

Documenting all variables in PHP code can be time-consuming and may lead to redundant or unnecessary documentation. It can also make the code harder to maintain if the variable names or types change frequently. Instead, focus on documenting complex or important variables, functions, and classes to provide clear and concise information for other developers. 

/**
 * Calculate the total price of items in a shopping cart
 *
 * @param array $items An array of items in the shopping cart
 * @return float The total price of all items
 */
function calculateTotalPrice(array $items): float {
    $totalPrice = 0;
    
    foreach ($items as $item) {
        $totalPrice += $item['price'];
    }
    
    return $totalPrice;
}

Keywords

variable documentation PHP code readability

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