A collection of 50 excellent classic PHP algorithms

09 Nov 2025

The filter_var() function is used to verify and clean data. It supports email, integer, URL, IP and other format verification. It is implemented through built-in filters such as FILTER_VALIDATE_EMAIL without the need for external libraries.

01 Jan 2026

This article discusses how to decode some fields into a structure while retaining other fields not defined in the structure when using the encoding/json package to process JSON data in the Go language. We will introduce methods using the json.RawMessage type and custom Unmarshaler/Marshaler interfaces, and briefly mention solutions from other libraries to help developers flexibly handle dynamic JSON data.

20 Jan 2026

In the Vite project, when using Reagraph to draw graphics and try to display Russian and other non-Latin characters on nodes, the characters often cannot be displayed normally due to a failure to load the font file. The core solution is to declare font module types such as .ttf in the vite-env.d.ts file so that Vite can correctly parse and import these assets, thereby providing the necessary font support for Reagraph or other text rendering libraries.

02 Dec 2025

When dealing with random number generation in Go language libraries, initialization and usage strategies need to be carefully chosen to avoid conflicts with the application layer or other libraries, and to ensure that the randomness meets requirements. This article will explore three core methods: implementing dependency injection through interfaces to provide flexibility, utilizing the crypto/rand package to meet high security requirements, and using private rand.Rand instances to isolate internal randomness, aiming to guide developers to choose the most appropriate random number generation scheme based on specific scenarios.

07 Jan 2026

When installing the DeepFace library, users may encounter AssertionError, which is usually caused by a conflict between the library version and the system or other dependent libraries. This article provides a practical method to solve this problem by specifying old versions of DeepFace and dlib and disabling DeepFace's dependent installation, ensuring a smooth installation under specific system environments.

14 Dec 2025

This article aims to solve the common problem of AWS Lambda not recognizing the Redis module when running with Python. When the Lambda function tries to import third-party libraries such as Redis, it will cause a No module named 'redis' error because these libraries are not integrated by default. The tutorial will introduce two main solutions in detail: one is to encapsulate and share the Redis library by creating and using AWS Lambda layers (Layers), and the other is to directly package Redis and its dependencies into the Lambda deployment package to ensure that the function can successfully import and use Redis.