This article covers common issues and solutions for PHP not being able to connect to MySQLi, including checking connection information, MySQL service status, and PHP extension loading, helping developers resolve the issue quickly.

This article provides a detailed guide on how to install and enable the mysqli extension in PHP7, including a sample script to test the extension. It helps developers quickly set up a stable MySQL database connection environment.

Before diving into mysqli::release_savepoint, it's important to understand transactions and rollback mechanisms. A transaction is a set of database operations that must either all succeed or all fail and be rolled back. Transactions typically adhere to the four ACID properties:

In PHP development, database operations are among the most common tasks. When interacting with databases, especially using the MySQLi extension, capturing and logging errors is crucial for debugging and maintaining your applications. The mysqli::$errno and mysqli::$error properties help developers understand the specific causes of database errors.

What is mysqli::dump_debug_info? mysqli::dump_debug_info() is an instance method of the MySQLi class. Calling it can output the underlying debugging information of the current connection. It writes debug information to the server log, including the status of the connection pool, memory usage, connection statistics, etc.

This article explores the best practices for using the mysqli::dump_debug_info function in PHP together with MySQL’s debug mode, providing developers with practical guidance to enhance database connection debugging and performance analysis.

How to Use mysqli::dump_debug_info to Quickly Diagnose and Resolve MySQL Connection Issues?

This article explains how to handle errors when using mysqli::connect to establish a connection to a MySQL database. It discusses how to capture and handle error messages using both traditional error reporting and exception handling in PHP.

This article explains how to use the mysqli::get_charset method to check if the character set for a database connection is set correctly in PHP. It also demonstrates how to modify the character set using the set_charset method to avoid encoding issues when dealing with multi-language content.

This article explains how to use PHP's mysqli::get_charset method to obtain detailed character set information for a MySQL database connection, including charset name, collation, byte length, and internal ID, and highlights its practical applications.

mysqli::get_charset is a method in PHP’s mysqli extension used to retrieve the character set of the current database connection. The character set determines how the database encodes and processes text. Common character sets include utf8, utf8mb4, and latin1. For multilingual websites, utf8mb4 is usually the recommended character set because it supports a wider range of characters, including emojis.

In PHP, when using a MySQL database, ensuring that the database connection's character encoding is correct is crucial. Incorrect character encoding can lead to abnormal display of Chinese or other non-ASCII characters. PHP provides the mysqli::get_charset method for this purpose.

In the MySQLi extension of PHP, both mysqli_stmt::next_result and mysqli::more_results are related to multi-query operations, but they have different usage scenarios and objects.

1. What is mysqli::refresh? mysqli::refresh is a method of the mysqli class, which is defined as follows:

When operating a MySQL database in PHP, you sometimes encounter the problem that cached data is not updated in time. MySQL's caching mechanism can improve query efficiency, but in some cases, we need to force refresh the cache to ensure that the latest data is obtained. The mysqli::refresh function is the tool used to implement this function.

This article explains how to resolve garbled character issues when using PHP’s xml_parser_create function to parse XML files, providing detailed step-by-step solutions to ensure proper encoding handling.

How to Properly View Debug Logs After Enabling mysqli::debug?

The mysqli::debug function in PHP allows you to debug MySQL queries and provides useful debugging information. This article explains how to properly write the parameter format for the function, what options are available, and key considerations when using it.