How to Solve High Memory Usage When Handling Large Files Using the hash_update_stream Function?

getrusage() is a native PHP function used to obtain resource usage information for the current process or its child processes. It returns an array containing various system-level metrics such as user and system CPU time, memory page faults, and context switches. By measuring these metrics before and after database queries, developers can assess the system load impact and optimize performance accordingly.

This article provides a comprehensive explanation of how PHP code testing works, focusing on the core concepts and structure of the PHPUnit testing framework. With detailed examples, it illustrates how to write and execute test cases to efficiently validate code functionality and ensure application stability.

This article provides a practical guide to integrating PHP with the open-source full-text search engine Coreseek to build a fast and scalable search tool for game assets. With real-world code examples, it explains the search process, optimization strategies, and configuration tips—ideal for developers working with large asset libraries.

This article thoroughly explains the importance and practical methods of data filtering in PHP, covering input filtering, output filtering, and data encryption. It helps developers effectively prevent data tampering and damage, enhancing website security. Practical code examples are included, making it a useful reference for PHP developers.

This article provides a detailed guide on how to use PHP and XML to create and call Web services, covering the use of SOAP extensions and XML data transfer and parsing, helping developers master efficient communication methods between systems.

This article provides an in-depth explanation of PHP's parse_url() function, helping developers easily parse URL strings and extract host, port, path, and other information. Through examples, you will quickly master this function and improve web development efficiency.

This article provides a detailed explanation of the PHP file_put_contents() function, including how to write strings to a file and append data to an existing file. Through code examples, it helps readers understand parameter settings and return value checks, allowing them to master practical file writing techniques and improve PHP development efficiency.

This article explains how to use PHP to securely filter and validate user-uploaded images and multimedia files. Covering file extension checks, MIME type validation, size limits, and safe storage techniques, it helps developers effectively prevent upload risks and ensure application security and stability.

This article provides a detailed guide on how to use PHP combined with the AMap (Gaode) API to implement map layer creation, control, and event management. With practical code examples, it helps developers quickly grasp how to add, show, and hide map layers, ideal for developers integrating AMap features into web projects.

This article provides a detailed explanation of how to automate CMS data backups using PHP scripts combined with Linux cron jobs. With example code, it shows how to set up backup directories, create backup functions, and configure scheduled tasks to ensure data security and prevent operational interruptions caused by data loss.

This article provides a detailed guide on how to use PHP's ImageExif extension to read and edit Exif metadata embedded in images, helping developers efficiently manage photo information. It's suitable for all PHP developers looking to master image metadata processing techniques.

This article provides a detailed guide on how to use the PHP ImageExif extension to read and modify image Exif metadata, covering installation checks, reading examples, and editing operations to help developers efficiently manage and process image information.

This article provides a detailed explanation of the common PHP error "call to undefined method," including its causes and practical solutions. It covers checking if methods exist, method visibility, using the __call magic method, and verifying class file inclusion to help developers effectively troubleshoot and resolve this frequent issue, enhancing code stability and maintainability.

This guide provides PHP developers with a comprehensive introduction to building WeChat Mini Programs using the EasyWeChat framework. From installation and configuration to writing basic controller logic, learn the essential steps to get started efficiently.

With PHP’s built-in ZipArchive extension, it’s easy to modify the properties of files inside ZIP archives. This article provides a detailed guide with examples on how to use statIndex and setExternalAttributesIndex to manage file permissions and metadata in ZIP files.

This article explores how to combine PHP with regular expressions to efficiently scrape content from web pages. It includes practical examples to help developers accurately extract and process online data.

This article provides a comprehensive guide on using PHPMailer for email sending in PHP, with a focus on managing common errors and exceptions. Learn how to enhance the stability and reliability of your email functionality in web applications.

This article explores how to significantly enhance website search performance by combining PHP with the Coreseek full-text search engine. It covers database optimization, PHP extensions, functional tuning, and asynchronous search strategies, offering practical guidance for web developers and backend engineers.