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Course Introduction：Subtracting the number of days from dates in PHP can be achieved by strtotime() and DateTime classes. Use strtotime() to operate directly through strings, such as date("Y-m-d",strtotime("-3days",strtotime($date))); the recommended DateTime class is clearer and maintainable, supporting time zones and complex logic, such as $date->modify("-3days") or $date->sub(newDateInterval('P3D')). Notes include:

2025-07-06 comment 0  398

Course Introduction：PHP provides a variety of functions and classes for processing dates and times. This article will explore different ways to get the current date and time in PHP and discuss some additional considerations when dealing with time in PHP. Key Points PHP provides a variety of methods to get the current date and time, including the date() function, the time() and gmdate() functions, and the DateTime classes. Each method allows for different formatting options and considerations, such as time zones. When using the date() function and the DateTime class, the server's local time zone is used by default. To use a different time zone, you can use date_default_timez

2025-02-08 comment 0  994

Course Introduction：Classes and Objects in PHP PHP, like Java, supports object-oriented programming and uses classes and objects as its core building blocks. Understanding these concepts is essential for mastering PHP. This guide will cover everything you need to

2024-12-29 comment 0  1035

Course Introduction：How to Call Functions of Child Classes from Parent Classes in PHPIn PHP, a common task is invoking functions defined in child classes from within parent classes. Consider the following example:class whale { public function __construct() { //

2024-10-19 comment 0  1116

Course Introduction：Unraveling the Enigma of PHP Classes: A Comprehensive GuideUnderstanding the Purpose of PHP ClassesIn the realm of programming, classes serve as...

2024-12-01 comment 0  637

Course Intermediate  17233

Course Introduction："PHP Architect Related Course Video Tutorial" is recorded by a lecturer from Band of Brothers. The course duration is twelve days. It starts from the basics of web website architecture and guides everyone to master PHP-related knowledge more comprehensively, including mysql database and MongoDB database. .

Course Elementary  19706

Course Introduction：PHP has perfect support for object-oriented programming. Classes are templates for objects, objects are instances of classes, and namespaces are the ultimate solution to naming conflicts for global members. Starting from PHP5.3, the emergence of namespaces, and PHP.5.4, the Trait class breaks through the limitations of single inheritance, making the functions of the class more flexible.

Course Elementary  13770

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82280

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13144

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.