Is it advisable to call functions within functions in PHP programming?

It is generally advisable to avoid calling functions within functions in PHP programming as it can lead to code that is harder to read, debug, and maintain. Instead, it is recommended to separate the functionality into standalone functions and call them as needed. 

function calculateTotal($price, $taxRate) {
    $tax = calculateTax($price, $taxRate);
    return $price + $tax;
}

function calculateTax($price, $taxRate) {
    return $price * $taxRate;
}

$total = calculateTotal(100, 0.10);
echo "Total price with tax: $" . $total;

Keywords

PHP functions nested functions recursion performance

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