In PHP programming, the pack() function is often used to package data into binary strings for easy storage or transmission. Pack() is very common especially when dealing with binary protocols, file formats or network data. This article will explain in detail how to use the pack() function to verify the result data, and share some practical techniques and common methods.

Mysqli::debug() is a very useful tool when debugging database connection issues or analyzing slow queries. But will it affect application performance? This is a question that developers often care about. This article will conduct a quantitative analysis of the performance impact of mysqli::debug() through actual PHP test code.

When learning and teaching database operations, it is important to understand the behavior of MySQL and the execution of SQL queries. For PHP developers, the mysqli::debug method provides a very intuitive way to help us see the interaction between MySQL and PHP, especially when doing database operations.

In daily PHP development, mysqli::debug is usually used to simply view database connection process and execution details. It may be sufficient in the early stage of debugging, but when the project gradually becomes more complicated, relying solely on mysqli::debug often fails to meet the in-depth analysis needs of performance bottlenecks or complex queries. Therefore, this article will take you through how to smoothly transition from mysqli::debug to a more powerful debugging tool - Xdebug and MySQL slow query logs, thereby systematically improving database debugging efficiency.

In many applications, getting the daily sunset time is very important for some applications involving astronomy, geography, or lifestyle. For example, some apps may schedule tasks based on sunset times or remind users when they start nighttime activities. This article will explain how to use PHP to get the sunset time of the entire month every day, with detailed code examples.

In PHP, the pack() function is a very powerful tool for packaging data into binary strings in a specified format. It is often used for network transmission, file writing, or interaction with binary protocols. Correspondingly, the unpack() function can parse the packaged binary string back to structured data. This article will introduce in-depth how to use pack() and unpack() to achieve packaging and parsing of custom structures, and help you better understand its application through specific examples.

In PHP programming, processing strings is one of the most common tasks in daily development. And when you need to find the location of a substring in a string, and you don't want to be case sensitive, the scripos() function will be a very practical tool.

The stripos function is a function used to find the location of a substring in a string for the first time. Unlike the strpos function, strpos is case-insensitive. This makes it very convenient when implementing keyword filtering, especially when case needs to be ignored.

In PHP programming, stripos() is a very common string search function, which is used to find the first occurrence of a string in the target string without being case-sensitive. Many developers may be worried about one issue when dealing with multilingual or strings containing Chinese content:

stripos() is a very common function that is used to find another substring case-insensitive in one string. Although the basic usage of this function is very simple, its third parameter, $offset, is often ignored or misused.

Stripos() is a very useful function when processing strings in PHP. It can be used to find where a substring first appears in a string, and yes. Even better, the scripos() function also supports searching from the specified location, which is very practical for handling larger text or scenarios where previous content needs to be skipped.

In modern network applications, secure communication is particularly important. PHP provides a rich network programming interface, combining socket functions and TLS/SSL encryption protocols to achieve secure encrypted communication. This article will focus on how to use PHP's socket_accept() function to achieve secure connections with TLS/SSL.

When developing web applications, we often need to search in a large amount of data. For ordinary exact matches, you may use strpos or other string functions. However, when we need to do fuzzy searches, PHP provides a very practical function - stripos. This function allows us to find the location of a substring in a string, and is case-insensitive when searching.

Handling sensitive word substitution is a common need, especially on social platforms, forums and other websites. In order to ensure that the user's language complies with regulations, we need to accurately replace sensitive words. stripos and str_ireplace are two commonly used PHP functions that work well together to achieve this.

When building efficient network services, latency is an important indicator that cannot be avoided. As a general scripting language, PHP also provides rich APIs in network programming, where the socket_accept() function is often used to handle connection reception on the server side. Although it is used relatively simple, if you want to build a low-latency and high-concurrency service, you still need to master a series of optimization techniques and practical application methods.

File upload is a very common feature in website development, but the question that comes with it is how to ensure the integrity and security of uploaded files. The file may be tampered with during the transfer, or a malicious file has been uploaded. PHP provides a convenient function md5_file(), which can help developers quickly calculate the MD5 verification code of a file, thereby verifying whether the file has been tampered with or damaged.

In the form submission, users may sometimes enter some inappropriate text or sensitive information. In order to ensure the health and security of platform content, we can use PHP's stripos function to search and filter user input. This article will introduce how to use the stripos function to implement keyword search and filtering in form content review, and give examples.