How can the Jalali calendar be converted to Gregorian using PHP in CodeIgniter?

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There are several ways to convert the Jalali calendar to the Gregorian calendar using PHP in CodeIgniter.

One of the most popular methods is using the JDateTime library, which is a PHP class for working with the Jalali calendar. Here are the steps to use this library for converting the Jalali date to Gregorian:

Step 1: Download and install the JDateTime library from the official website.

Step 2: Load the JDateTime library in your CodeIgniter project using the following code:

$this->load->library('JDateTime');

Step 3: Convert the Jalali date to Gregorian using the 'date' method of the JDateTime library:

$date = "1399/03/15"; // Jalali date $jdate = new JDateTime(true, true, 'Asia/Tehran'); // Create a new JDateTime object $gdate = $jdate->date("Y/m/d", $jdate->mktime(0, 0, 0, substr($date, 5, 2), substr($date, 8, 2), substr($date, 0, 4))); // Convert Jalali date to Gregorian echo $gdate; // Output: 2020/06/04

In this code, we first create a new JDateTime object and set the timezone to 'Asia/Tehran'. Then, we use the 'mktime' method of the JDateTime object to convert the Jalali date to Unix timestamp, and finally, we use the 'date' method to format the timestamp in the Gregorian calendar format.

There are also other libraries and functions available for converting the Jalali date to Gregorian, such as the 'jdate' function of the 'jalali' extension, or the 'ssdate' function of the 'PersianCalendar' class. However, using the JDateTime library is considered one of the most reliable and flexible methods for this purpose.