Modification Cost Effectiveness Calculator
[insert_php]//===============================================
if($_POST[‘a’] == “mmp”)
{
$miles_per_year = $_POST[‘miles_per_year’];
$fuel_price = $_POST[‘fuel_price’];
$current_mpg = $_POST[‘current_mpg’];
$future_mpg = $_POST[‘future_mpg’];
$modification_price = $_POST[‘modification_price’];
$error = 0;
if(!trim($_POST[‘miles_per_year’]))
{
$mmp_error_msg .= “
Miles Per Year must not be empty”;
$error++;
}
if(!trim($_POST[‘fuel_price’]))
{
$mmp_error_msg .= “
Fuel Price must not be empty”;
$error++;
}
if(!trim($_POST[‘current_mpg’]))
{
$mmp_error_msg .= “
Current MPG must not be empty”;
$error++;
}
if(!trim($_POST[‘future_mpg’]))
{
$mmp_error_msg .= “
Future MPG must not be empty”;
$error++;
}
if(!trim($_POST[‘modification_price’]))
{
$mmp_error_msg .= “
Modification Price must not be empty”;
$error++;
}
if($error == 0)
{
$current_cost_per_mile = (($_POST[‘miles_per_year’]/$_POST[‘current_mpg’])*$_POST[‘fuel_price’])/$_POST[‘miles_per_year’];
//$current_cost_per_mile = number_format($current_cost_per_mile,2);
$future_cost_per_mile = (($_POST[‘miles_per_year’]/$_POST[‘future_mpg’])*$_POST[‘fuel_price’])/$_POST[‘miles_per_year’];
//$future_cost_per_mile = number_format($future_cost_per_mile,2);
$saving_per_mile = $current_cost_per_mile – $future_cost_per_mile;
$miles_to_break_even = $_POST[‘modification_price’]/$saving_per_mile;
$miles_per_day = $_POST[‘miles_per_year’]/365;
$days_to_break_even = $miles_to_break_even/$miles_per_day;
$months_to_break_even = $days_to_break_even/31;
$years_to_break_even = $months_to_break_even/12;
$view_mmp_result = “Miles to Break Even
“;
$view_mmp_result .= “
Current cost per mile: “.$current_cost_per_mile.”“;
$view_mmp_result .= “
Future cost per mile: “.$future_cost_per_mile.”“;
$view_mmp_result .= “
Saving per mile: “.$saving_per_mile.”“;
$view_mmp_result .= “
Miles to break even: “.$miles_to_break_even.”“;
$view_mmp_result .= “
“;
$view_mmp_result .= “Days to Break Even
“;
$view_mmp_result .= “
Miles per Day: “.$miles_per_day.”“;
$view_mmp_result .= “
Days to break even: “.$days_to_break_even.”“;
$view_mmp_result .= “
Months to break even: “.$months_to_break_even.”“;
$view_mmp_result .= “
Years to break even: “.$years_to_break_even.”“;
}
}
//===============================================
$content = ‘
‘;
$content = addslashes($content);
$content = “\$result=\””.$content.”\”;”;
eval($content);
print stripslashes($result);
[/insert_php]
