php parse csv file based on date range - php

Question

I am trying to display lines from a file based on a date range (ex: get today + next 7 days based on date field). I'm not familiar with PHP.
I have the following to read the file and create an array from the contents:
$txt_file = file_get_contents('shipping_dates.txt');
$rows = explode("\n", $txt_file);
array_shift($rows);
foreach($rows as $row => $data)
{
//get row data
$row_data = explode(',', $data);
$info[$row]['Order_Date'] = $row_data[0];
$info[$row]['Free_Shipping'] = $row_data[1];
$info[$row]['Rush_Order'] = $row_data[2];
//display data
echo 'Row ' . $row . ' Order_Date: ' . $info[$row]['Order_Date'] . '<br />';
echo 'Row ' . $row . ' Free_Shipping: ' . $info[$row]['Free_Shipping'] . '<br />';
echo 'Row ' . $row . ' Rush_Order: ' . $info[$row]['Rush_Order'] . '<br />';
}
This works great - Now I need to grab the individual lines based on a date range and display only the lines within the range only, not the entire contents for each of these 3 options.

Answer 1

I would do:
Assuming your desired date range is only for 'entire days' without considering the hours.
Get the date range in unix TimeStamp format. Example for January 2018. You have to manually add " 00:00:00" and " 23:59:59" so you cover the full days.
Before your foreach loop:
$filter_date_from = '2018-01-01';
$filter_date_to = '2018-01-31';
$date_from = $filter_date_from.' 00:00:00'; // add begin of the day
$date_to = $filter_date_to.' 23:59:59'; // add end of the day
$date_from_ts = strtotime($date_from); // convert to unix timestamp
$date_to_ts = strtotime($date_to);
Then inside the loop you would check this, once you have $info[$row]['Order_Date'] stuffed:
// convert the order date to unix timestamp
$order_date_ts = strtotime($info[$row]['Order_Date']);
// just compare
if ($order_date_ts >= $date_from_ts && $order_date_ts <= $date_to_ts) {
// you want the CSV line because it is IN the date range
}
With this solution you don't care if the Order_Date includes hours, minutes and/or seconds, or none of them (strtotime will assume 00:00:00 if none are provided).
Please note that the dates/datetimes must be in a format that the php function "strtotime" understands, like Y-m-d. See documentation for strtotime if you get weird results.
Not tested but let me know if it works for you...