1 views collected around this technical thread.
This article explains how to use PHP's filemtime function to obtain a file's last modification timestamp, demonstrates single‑file and multiple‑file examples with code, and shows how to format the timestamp using the date function.
This article explains how to use PHP's filemtime function to obtain a file's last modification timestamp, demonstrates converting it to a readable date with date(), and provides code examples for retrieving timestamps for a single file and multiple files.
Learn how to correctly handle time zones in JavaScript by storing dates in UTC, using the IANA database, detecting daylight saving time, and leveraging built‑in Intl APIs or libraries like Luxon, with practical code examples and best‑practice guidelines.
This article explains the PHP time() function, describing how it returns the current Unix timestamp, how to use it without parameters, and provides multiple code examples for retrieving timestamps, comparing dates, and formatting the current date and time.
This article explains PHP's date() function, its syntax, required and optional parameters, and provides multiple code examples demonstrating how to retrieve and format current dates, times, and timestamps for various use cases in backend development.
The article explains the design flaws of java.util.Date, why it should be replaced, and provides a step‑by‑step guide with code examples for migrating to the modern java.time classes such as Instant, LocalDateTime, LocalDate, and ZonedDateTime in Java backend projects.
The article explains the design flaws of java.util.Date, such as mutability, misleading naming, and timezone issues, and provides a step‑by‑step guide to replace it and related APIs with java.time classes like Instant, LocalDateTime, and ZonedDateTime, including code examples.
This article explains how to use PHP's timestamp functions—including time(), strtotime(), date(), and mktime()—to obtain current timestamps, convert strings to timestamps, format dates, handle time zones, and perform relative time calculations with practical code examples.
This article explains how to use PHP's time‑related functions—including time(), date(), strtotime(), and date_default_timezone_set()—to obtain the current timestamp, format dates, perform date arithmetic, and configure timezones, providing clear code examples for each operation.
This article explains the PHP date() function, covering its syntax, required and optional parameters, common format characters for year, month, day, hour, minute and second, additional textual options, usage for timestamp conversion, and timezone considerations, helping developers handle date and time tasks efficiently.
This article examines why native JavaScript Date falls short for time handling, explains time measurement standards and time zones, and compares four major date libraries—MomentJS, DayJS, date-fns, and native Date—highlighting their advantages, drawbacks, and appropriate usage scenarios.
The article examines how to design cross‑database date and time storage by comparing MySQL, Oracle, and SQL Server date‑time types, discussing their formats, ranges, storage sizes, and trade‑offs, and proposes practical solutions such as using timestamps, custom conversion functions, and ORM considerations.
The article explains PHP's cal_days_in_month function, detailing its purpose, parameters (calendar, month, year), return value, and provides a complete example showing how to retrieve and display the number of days in a specific month of a given year.
The jdmonthname function in PHP returns the name of a month based on a given Julian day number and a specified calendar mode, detailing its string return type, required integer parameters, and usage for different calendar systems.
The JDDayOfWeek PHP function returns the day of the week for a given Julian day number, offering numeric or English string results based on an optional mode parameter, making it useful for date calculations in backend development.
The article explains the PHP cal_days_in_month function, detailing its purpose of returning the number of days in a specific month for a given year and calendar, describing its parameters, return value, and providing a complete code example illustrating its usage.
This tutorial shows how to use PHP's date and strtotime functions to retrieve the first and last day of the current month, extract the current year/month/day and total days in the month, obtain month boundaries via a custom function, and calculate the previous month's start and end dates.
This article explains PHP's time() function, which returns the current Unix timestamp, and demonstrates how to calculate and display the current date and the date one week later using both arithmetic and strtotime methods.
This tutorial demonstrates how to use PHP variables and the date() function to automatically compute a student's age based on their birthdate, handling current date retrieval, birthday checks, and adjusting the age calculation accordingly.
This article explains how to construct SQL INSERT statements for string, numeric, date, and boolean fields, demonstrates variable concatenation for dynamic values, and provides a comprehensive example that combines multiple data types into a single query.