How to any value display only till 2 decimal points?

Using following methods can display only 2 decimal point value.

Method 1:-

<?php
 $final_total=199.9;
 
    $formattedNum = number_format($final_total, 2);
    echo $formattedNum;
 ?>

Method 2:- 
 
<?php 

 $final_total=199.9;

 echo $number = sprintf('%0.2f', $final_total); 
 ?>
 
 

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