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php, add trailing zeros if the number is integer

Simple maths:

  $a=$b/$c; echo $a;

if $b equals to 123.00 and $c equals to 1 then $a becomes 123.

If $b is 123.50, $c is 1, $a is 123.50. But in the former case , I want $a to be 123.00.

It is possible to test whether $a has any non-zero fraction part or not, and then add the trailing zeros as necessary.

But I am looking for php functions to do the same thing. Possible?

EDIT :

What if I do not want the commas from number_format there ?

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Use sprintf("%0.2f",$a);. docs


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