(PECL printer SVN)
printer_logical_fontheight — Get logical font height
$printer_handle
   , int $height
   )
   The function calculates the logical font height of height. 
  
printer_handle
       printer_handle must be a valid printer handle.
      
heightThe font height.
   Returns the logical font height or FALSE on failure.
  
Example #1 printer_logical_fontheight() example
<?php
$handle = printer_open();
echo printer_logical_fontheight($handle, 72);
printer_close($handle);
?>