[PHP] Is It Possible to Tell PHP To Output x Decimal Places Per Float?

[Dan Anderson]

Is it possible to tell PHP when converting a number to a string (i.e. in
an echo or print command) to use x decimal places?

Specifically, if I 

<?php
  echo '$' . $some_price;
?>

And some_price is $1.50, it outputs:

$1.5

Thanks in advance,

Dan


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