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12:27 am, February 11, 2019
How Many Days Since a Date and other Calculations
Here i calculate the number of days since a certain date in php and use the values for checking how much something costs per day.
Start Date
Lets add the date that the item was purchaced. In date format Year-Month-Day
$date_start = date_create("2017-10-29");
Today's Date
Get todays date according to the server date with php
$todays_date = date_create(date('Y-m-d'));
Check the difference between the dates
Using the date_diff function we can check the difference between these dates.
$diff = date_diff($date_start,$todays_date);
Output the details
I usually like to add all the data into a variable and then return it so here we will add all the data to the variable $template_result. This will give us the amount of days since the original date.
$template_result = 'Number of Days Since 29th October 2017 is '.$diff->format("%a");
More Calculations
Using this number we can calculate different things like how many years or months since a date.
Years Since Calculation
Calculate the Years since the date.
$years_calc = $diff->format("%a") / 365;
$years_calc = number_format($years_calc, 2);
$template_result .= "<p>Years $years_calc </p>";
Cost per Day
If the item has an original value we can then calculate the cost per day using the original number.
$cost = 331;
$per_day = $cost / $diff->format("%a");
$per_day = number_format($per_day, 2);
$template_result .= "<p>Original Total Cost: $$cost, Cost per Day $$per_day </p>";
Return the results
Now we can just return the results or just echo them.
echo $template_result;
You can see a working demo below.
Years 7.05
Original Total Cost: $331, Cost per Day $0.13
View Statistics
This Week
105
This Month
237
This Year
0
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