README

A PHP library for finding and counting consecutive dates in a sequence. This library provides a simple and efficient way to determine consecutive date patterns, useful for tracking streaks, daily logins, or any sequential date-based calculations.

Features

• Count consecutive dates backwards from a given date
• Count consecutive dates forwards from a given date
• Support for custom date formats
• Works with both DateTime objects and date strings
• Zero dependencies
• Type-safe implementation
• PSR-4 compliant

Installation

You can install the package via composer:

composer require d34dman/consecutive-date

Usage

Basic Usage with DateTime Objects

use D34dman\ConsecutiveDate\ConsecutiveDate;

// Create a list of DateTime objects
$dateList = [
    new DateTime("2024-03-15"),
    new DateTime("2024-03-14"),
    new DateTime("2024-03-13"),
    new DateTime("2024-03-12"),
    new DateTime("2024-03-10"), // Note the gap here
];

// Count consecutive days backwards from a specific date
$currentDate = new DateTime("2024-03-15");
$consecutiveDays = ConsecutiveDate::countPastDays($currentDate, $dateList, "Y-m-d");
// Result: 4 (March 15, 14, 13, 12)

// Count consecutive days forwards
$startDate = new DateTime("2024-03-12");
$consecutiveDays = ConsecutiveDate::countFutureDays($startDate, $dateList, "Y-m-d");
// Result: 4 (March 12, 13, 14, 15)

Using String Dates

use D34dman\ConsecutiveDate\ConsecutiveDateStrings;

// Array of date strings
$dateStrings = [
    "2024-03-15",
    "2024-03-14",
    "2024-03-13",
    "2024-03-12"
];

$currentDate = new DateTime("2024-03-15");
$consecutiveDays = ConsecutiveDateStrings::countPastDays($currentDate, $dateStrings, "Y-m-d");
// Result: 4

Custom Date Formats

// Using different date format
$dateStrings = [
    "15/03/2024",
    "14/03/2024",
    "13/03/2024"
];

$currentDate = new DateTime("15/03/2024");
$consecutiveDays = ConsecutiveDateStrings::countPastDays($currentDate, $dateStrings, "d/m/Y");
// Result: 3

API Reference

ConsecutiveDate Class

countPastDays(DateTimeInterface $date, array $list, string $date_format): int

Counts consecutive days backwards from the given date.

• $date: The reference date to start counting from
• $list: Array of DateTime objects
• $date_format: Format string for date comparison (e.g., "Y-m-d")

countFutureDays(DateTimeInterface $date, array $list, string $date_format): int

Counts consecutive days forwards from the given date.

• Parameters are same as countPastDays()

ConsecutiveDateStrings Class

Has the same methods as ConsecutiveDate but works with string dates instead of DateTime objects.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request. For major changes, please open an issue first to discuss what you would like to change.

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/AmazingFeature)
3. Commit your Changes (git commit -m 'Add some AmazingFeature')
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.

Author

• Shibin Das - d34dman
• Email: shibinkidd@gmail.com

Support

If you encounter any problems or have suggestions, please open an issue on GitHub.