When i'm outputting some of my double variables they're being written in exponential form using fwrite. Can i set some defaults in PHP where whenever a variable is displayed (copied or stored) it always happens in decimal format?
To be precise the problem occurs when i use the json_decode method on a json string which contains a double value (which is not in exponential form). That double value after converting an an object becomes exponential.
Assuming the numbers are still floats when being written (as opposed to strings), this is one way of doing it:
echo rtrim(sprintf("%0.15f", $x), "0.");
I'm not sure if there's a cleaner way or not. But basically this uses sprintf to print a maximum of 15 decimal places, and then trims off any trailing 0 or . chars. (Of course, there's no guarantee that everything will be rounded nicely with trailing zeros as you might expect.)
If you just want a fixed size, then you can adjust the 15 and remove the rtrim.