stripos and exploit are two very useful functions that can be used in combination to implement fuzzy search functions. The stripos function is used to perform case-insensitive string lookups, while exploit is used to split a string into an array. These two functions can efficiently implement fuzzy search of multiple keywords.

We often need to determine whether a string contains another specific word or substring. This kind of operation is very common in scenarios such as processing user input, filtering keywords, and building search functions. PHP provides a very practical function - stripos(), which can help us easily accomplish this task.

In PHP programming, we often encounter the need for string search, such as determining whether a substring exists in another string. PHP provides multiple built-in functions for this, the two most commonly used are strpos() and strpos(). Although their usage looks very similar, they behave with a key difference: whether it is case sensitive.

When performing database-related unit tests, we sometimes need to have a deeper understanding of what exactly is happening, especially when the test fails and involves complex SQL operations. PHP's mysqli extension provides a very practical debugging function mysqli::debug(), which can output the underlying operation logs to a file. This article will introduce how to combine mysqli::debug() to implement the debugging function of database operations when using PHPUnit for testing.

In daily PHP development, database performance problems are often the most troublesome, especially those intermittent timeout problems, which often make it difficult for developers to quickly locate. Fortunately, PHP's mysqli extension provides a powerful tool - mysqli::debug, which can help us record detailed database operation logs, thereby deeply analyzing slow query or connection problems and quickly finding performance bottlenecks.

Using mysqli::debug() is a very practical method in debugging MySQLi connections and execution. It can record underlying calls, connection details, execution statements and other information into log files, helping to analyze problems. But sometimes, developers may encounter a confusing phenomenon: after calling mysqli::debug(), they do not see any output in the expected log file, and the log is empty. So, what may be the cause of this?

The end() function is often used to move an array pointer to the last element of the array and return that element. When you try to apply end() to non-array variables or strings, you usually encounter error prompts, similar to:

In PHP, the end() function is a commonly used array function that points the inner pointer of the array to the last element and returns the value of that element. This operation is very useful for handling most arrays. However, when you use the end() function to manipulate a reference array, some unexpected side effects may be caused. This article will explain why this happens and provide some relevant examples.

In PHP programming, end() and reset() are two very common functions that are often used to manipulate pointers in arrays. When processing arrays, pointer operations can help us more flexibly access and modify elements of arrays. However, the functions and behaviors of these two functions are slightly different. This article will analyze their differences and connections in detail.

The end() function is a very common function that points an internal pointer to the last element and returns the value of that element. Simply put, the end() function allows you to quickly access the last element in an array.

Understanding the basic information about the current platform is very helpful in diagnosing problems and optimizing performance when developing and maintaining PHP applications. The php_uname() function is a very useful tool in PHP that can be used to obtain relevant information about the operating system. Through this function, we can quickly build a simple diagnostic tool page to display the server's system information. This article will teach you how to quickly build a platform diagnostic tool page using php_uname().

Performance optimization is a timeless topic in PHP programming, especially when dealing with large traffic or complex operations. php_uname() is a commonly used PHP function to obtain information about the operating system. Although php_uname() itself does not consume a lot of resources, it may still have an impact on performance in some scenarios when calling this function frequently in some high concurrency environments.

Logging is a very important task when developing and debugging PHP applications, which can help developers track system behavior, locate issues, and optimize performance. PHP provides a variety of logging methods, where the php_uname() function is a useful tool that can record operating system details in the log, aiding in debugging and performance analysis. This article will introduce how to use the php_uname() function to build debug level logging.

When developing PHP programs, the php_uname() function is a very practical tool that can return relevant information about the operating system, such as the operating system name, version, machine type, etc. However, in some cases, when we call php_uname(), the returned results may appear garbled, especially in multilingual or cross-platform environments. This article will help you understand why php_uname() returns garbled code and provide detailed steps on how to solve the character encoding problem.

The php_uname() function is a very practical function that returns the complete information of the current operating system. This function allows you to obtain the system name, version, and other details. It is usually used for debugging, diagnosing, and obtaining system-level information.

The preg_replace_callback_array function is a powerful tool that executes a callback function to replace it when a regular expression matches a specific pattern. It can handle complex string replacement operations, especially when you want to handle multiple patterns and callback functions, it provides a more concise and efficient way.

In PHP programming, preg_replace_callback_array is a very powerful function that allows you to batch replace multiple patterns in a string with a callback function. When multiple text patterns need to be replaced, using preg_replace_callback_array not only simplifies the code, but also improves the readability of the code. However, just like all operations involving external inputs and outputs, preg_replace_callback_array can also have security risks, especially when it comes to HTML output.

In PHP, the preg_replace_callback_array function is a powerful tool that allows you to specify different callback functions for multiple regular expression patterns. This function associates the pattern with the callback function through an associative array and replaces it in sequence. However, how is the execution order of the callback function determined?

The preg_replace_callback_array function is a very practical tool that allows you to match multiple regular expressions simultaneously and replace the matching content. This function can greatly simplify the code that requires processing multiple regular replacement tasks simultaneously. This article will explain how to use the preg_replace_callback_array function, especially when you need to replace content matching multiple regular expressions at the same time.