What are some best practices for handling and displaying long numbers in PHP?

When handling and displaying long numbers in PHP, it is important to format them properly to improve readability and avoid potential errors. One common approach is to use number_format() function to add commas as thousands separators. This function allows you to specify the number of decimal places and the characters to use as decimal and thousands separators.

$longNumber = 1234567890;
$formattedNumber = number_format($longNumber);
echo $formattedNumber;