Jason,
Now I am really treading into the unknown, I know NOTHING about computer language or programming. But what if in the third line of the partial quote below you changed ">0" to "=0" as the formula just to calculate the progress since adding tanks? Isn't that the code entry that tells the calculator that the mpg start may be something above 0, as in 23,151 miles in my case?
Bob
Quote:
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Originally Posted by Jason
If any of you know PHP, maybe this could help. It's the code to calculate lifetime MPG.
[// Define car data
$mi=$car['mi_start']+$mi_tanks;
if($car['mpg_start']>0) {
$mpg=$mi / ($tanks_bit + ($car['mi_start']/$car['mpg_start']));
} elseif ($mi_tanks>0) {
$mpg=$mi_tanks / $tanks_bit;
} else {
$mpg=0;
}[/code]
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