This article provides a detailed guide on using the PHP ZipArchive class for folder compression and extraction, along with practical code examples to help developers quickly master this common task.

In development, we often encounter situations where we need to allow certain items to pass through while excluding those not in the whitelist. We can use the array_diff() function to elegantly exclude specific items from the whitelist, improving code simplicity and readability.

In PHP, cross-file method (function) calls are a common requirement. This article discusses how to call methods across different PHP files and provides detailed code examples. By understanding how to use include, require, and other functions, you can better organize and reuse PHP code.

Learn how to implement personalized recommendation features with ChatGPT and PHP to enhance user experience and meet personalized needs. This article includes full code examples and detailed steps.

Discover the latest features of PHP 8.3, including improvements in the type system, enhanced JIT compiler, and security optimizations that boost performance and resolve shortcomings in previous PHP versions, helping developers improve application efficiency and security.

array_flip() is a very useful function in PHP that swaps the keys and values of an array. Developers often use it to achieve key-value inversion. However, to ensure the function behaves as expected in various scenarios, it is important to write effective unit tests for it.

In PHP, dictionaries (associative arrays) are a commonly used data structure for storing key-value mappings. Typically, we quickly look up values by their keys. However, sometimes we also need to find keys based on values, which requires reverse mapping functionality. There are many ways to implement reverse mapping, and PHP’s built-in array_flip() function offers a simple and efficient solution.

In PHP development, we often need to search for a keyword within a string and determine its relative position in the text. For example, we may want to know whether a keyword appears in the first half or the second half of the text. This is a common requirement in content analysis, SEO, and even advertising.

Image processing is a common requirement in web development, such as generating thumbnails, adding watermarks, and adjusting hues automatically. In certain scenarios, such as creating personalized avatars or artistic effects, we need to dynamically generate color palettes based on different inputs and apply them to images. This article will teach you how to write a PHP script that supports image processing.

When using the MySQLi extension, mysqli::stmt_init is the standard method for creating a statement object, while the prepare function is used to prepare SQL queries. Many developers may encounter situations where the prepare function is called repeatedly in loops or for multiple queries. However, does frequently calling the prepare function affect performance? This article will analyze this issue through practical tests and provide optimization suggestions.

First, we need to split the string to be displayed into individual characters so that each character can be processed separately. The str_split function is a powerful tool to achieve this.

When making HTTP requests with PHP, curl is one of the most commonly used libraries. It allows us to perform various tasks, such as sending GET or POST requests. To optimize performance, sometimes we want to reuse an established connection to avoid the overhead of establishing a new connection every time. This brings us to the concept of HTTP persistent connections.

First, we need a simple PHP socket service script that listens on a certain port, accepts connections, and responds simply.

Handling compressed files in PHP is a common task, especially when dealing with uploaded archive data or automated deployments. Among the available methods, zip_read() is an older interface of ZipArchive that allows you to step through each entry within a ZIP file. Although this method has largely been replaced by the object-oriented ZipArchive class, zip_read() still has practical value for certain projects or compatibility requirements.