This article provides an in-depth explanation of the naive string matching algorithm in PHP, including complete example code and performance analysis, helping readers efficiently perform pattern searches within text.

In high-concurrency network applications, connection pooling is a common optimization technique. It reduces the overhead of frequently creating and destroying connections, improving resource utilization and application performance. However, the connections in the connection pool are not always available, especially when socket-based connections may become unavailable due to network issues, server shutdowns, or timeouts.

In PHP network programming, socket_clear_error() is a commonly misunderstood function, especially for new developers. Many mistakenly believe that calling socket_clear_error() can “reset” or “restore” the socket’s state, making it available again. In reality, the function's functionality is quite different.

How to Efficiently Use the zip_read() Function to Handle ZIP Archives with Multi-level Nested Directories?

This article provides a detailed guide on how to effectively protect user passwords in PHP forms. It covers hashing algorithms for encrypting passwords, adding salt to enhance security, using PHP’s built-in password hashing functions password_hash() and password_verify() for secure validation, and securing data transmission with HTTPS. Practical methods for PHP developers to safeguard user information are discussed to ensure password security.

How to Optimize Path Definition and Checking in Projects Using defined() and DIR Constants

This article provides a detailed introduction on how to implement fast exponentiation for large numbers using PHP’s GMP extension. It explains the fast power algorithm, GMP installation and usage step-by-step, and includes a complete code example to help developers efficiently perform large number exponentiation in PHP.

This article provides a detailed explanation of the PHP array_walk() function, including its syntax, parameter descriptions, and practical examples, helping developers efficiently manipulate arrays and understand how to apply custom functions to array elements.

This article provides a detailed guide on how to use PHP combined with the powerful phpSpider framework to quickly build a web crawler that accurately extracts target webpage information. It includes sample code covering installation, crawler logic writing, data extraction, and result saving, making it ideal for beginners and developers to improve web data collection efficiency.

Explore the powerful new features and underlying mechanisms introduced in PHP8, including JIT compiler, enhanced type declarations, property access control, improved string and array functions, and anonymous class upgrades — all essential for building high-performance web applications.

This article deeply analyzes common anti-scraping mechanisms such as captchas, IP restrictions, and login requirements. It demonstrates how to leverage PHP and the phpSpider framework to effectively crack captchas, perform simulated logins, and use proxy IPs, providing developers with practical technical methods to bypass website blocks and efficiently collect data.

In development, we often use encryption algorithms to process data. One powerful function in PHP—pack()—is commonly used for formatting binary data. While it’s not a traditional encryption function, pack() can be cleverly applied to help us build the “packaging logic” for custom encryption algorithms.