What alternative functions or methods can be used to ensure that a specific number format, such as adding trailing zeros, is achieved in PHP?

When working with numbers in PHP, it is common to encounter the need to format them in a specific way, such as adding trailing zeros. One way to achieve this is by using the number_format() function, which allows you to specify the number of decimal places and the character to use as a decimal point and thousands separator. Another method is to use sprintf() function with formatting placeholders to achieve the desired number format.

// Using number_format() function to add trailing zeros
$number = 123.4;
$formatted_number = number_format($number, 2); // Outputs: 123.40

// Using sprintf() function to add trailing zeros
$number = 123.4;
$formatted_number = sprintf("%.2f", $number); // Outputs: 123.40