Found a total of 10000 related content
Beyond PHP_INT_MAX: Handling Large Integers with GMP and BigInt
Article Introduction：When it is necessary to process integers exceeding PHP_INT_MAX (such as 9223372036854775807), 1. Any precision mathematical library such as GMP extension or brick/math should be used; 2. GMP is based on C library, with high performance but requires server support; 3. Brick/math is a pure PHP implementation, which is easy to port but slower; 4. When initializing large numbers, strings must be used to prevent accuracy loss; 5. All operations should avoid floating-point numbers to ensure accuracy. The final choice depends on the degree of environmental control, performance requirements and code style preferences, but large integers need to be safely initialized in strings.
2025-07-27
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504
How to calculate exponential function in C language to the x power of e in C language
Article Introduction：In C language, you can use the Taylor series method and the exp function in the standard library to calculate the x power of e. 1. The Taylor series method is calculated through approximately, which is suitable for situations where the accuracy requirements are not high, but may overflow when large numbers are large. 2. The exp function method uses the math.h header file, with high accuracy and good optimization, but requires linking to the math library. The selection method needs to be based on specific needs.
2025-05-16
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475
Describe the Use of `cURL` or `Guzzle` for HTTP Requests in PHP
Article Introduction：In PHP, cURL is suitable for projects that require underlying control and lightweight scenarios, and Guzzle is suitable for projects that pursue development efficiency and maintainability. 1.cURL is a built-in extension for PHP, suitable for scenarios where simple requests and no additional dependencies are required, but the code is cumbersome and error handling is complex; 2. Guzzle is a modern PHP library with good packaging, rich functions, and supports PSR standards, which is easy to integrate into large applications or frameworks; 3. The selection basis is project complexity: use cURL for simple scripts, and choose Guzzle when complex systems or advanced functions are required.
2025-07-11
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695
Fixed Point Math in PHP with BCMath, precision loss cases
Article Introduction：Challenges and techniques for fixed-point numerical operations in PHP and MySQL
Extreme care is required when handling fixed point values, especially when developing with PHP and MySQL. This article will explore the obstacles and details encountered when using PHP BCMath extensions, MySQL fixed point expression processing, and persisting fixed point data from PHP to MySQL. Despite some challenges, we will try to figure out how to handle fixed point values ??and avoid accuracy losses.
Summary of key points
The BCMath extension in PHP supports arbitrary precision math operations, but can result in accuracy loss if numerical variables are passed to its functions. String values ??representing numbers should be used instead to avoid
2025-02-20
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664
python factorial example
Article Introduction：Recursively implement factorials by calling itself through function calls and defining 0!=1 and 1!=1 as the basic situation, suitable for understanding mathematical definitions but need to deal with negative numbers to avoid infinite recursion; 2. Loop implementation uses for loops to multiply from 2 to n, which is efficient and avoids stack overflow, and is suitable for large-number calculations; 3. Use math.factorial() to directly call the standard library function. The code is concise and optimized, and only non-negative integers will be accepted, otherwise exceptions will be thrown; 4. The complete example includes type checking and value verification, ensuring that the input is a non-negative integer and throwing corresponding exceptions when an error occurs. It is recommended to combine iteration or math modules and perform input verification in actual use to improve robustness.
2025-08-05
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944
An Introduction into Event Loops in PHP
Article Introduction：PHP event loop: a tool for asynchronous programming
Core points
A PHP event loop is a programming structure used to wait for events or messages in a scheduler, especially for handling asynchronous operations.
Traditional PHP programming is synchronous, performing one operation at a time, and waiting for each operation to complete before continuing with the next operation. While the event loop allows asynchronous programming, where an operation can be started and then put on hold until the result is ready, other operations can be performed during this time.
Library such as ReactPHP or Amp provides the necessary interfaces and classes to create and manage PHP event loops, allowing better use of resources and shorter response times, especially in applications that need to handle a large number of concurrent connections.
Although
2025-02-17
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688
How to build a log management system with PHP PHP log collection and analysis tool
Article Introduction：Select logging method: In the early stage, you can use the built-in error_log() for PHP. After the project is expanded, be sure to switch to mature libraries such as Monolog, support multiple handlers and log levels, and ensure that the log contains timestamps, levels, file line numbers and error details; 2. Design storage structure: A small amount of logs can be stored in files, and if there is a large number of logs, select a database if there is a large number of analysis. Use MySQL/PostgreSQL to structured data. Elasticsearch Kibana is recommended for semi-structured/unstructured. At the same time, it is formulated for backup and regular cleaning strategies; 3. Development and analysis interface: It should have search, filtering, aggregation, and visualization functions. It can be directly integrated into Kibana, or use the PHP framework chart library to develop self-development, focusing on the simplicity and ease of interface.
2025-07-25
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298
Dave The Diver: How To Catch Spider Crabs
Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10
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903
Prepare for Interview Like a Pro with Interview Questions CLI
Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI
What is the Interview Questions CLI?
The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview
2025-01-10
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1516
Soft Deletes in Databases: To Use or Not to Use?
Article Introduction：Soft Deletes: A Question of DesignThe topic of soft deletes, a mechanism that "flags" records as deleted instead of physically removing them, has...
2025-01-10
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1115
