Using MySQL databases in PHP, the efficiency of executing SQL statements directly affects application performance. Especially when dealing with large data operations and high concurrency scenarios, optimizing SQL execution has become a key focus for developers. This article will focus on the best practices for combining mysqli::options with mysqli::prepare.

During database optimization and performance troubleshooting, MySQL error logs and the mysqli::$warning_count property provide developers with valuable insights. Especially when interacting with MySQL databases using PHP, leveraging these tools properly can help quickly identify and resolve database performance bottlenecks.

When performing database operations using PHP's MySQLi extension, prepared statements offer a safer and more efficient way to execute SQL. However, sometimes even when a statement is successfully executed, there may still be potential warnings that are silently ignored by default. To capture these warnings, mysqli::$warning_count has become a useful, though not widely used, tool.

This article explains how to correctly use the PHP zip_read() function to handle zip files containing empty directories. It addresses the common issue of empty directories being lost during extraction and provides detailed examples to ensure the extracted file structure remains intact.

When working with databases—especially for PHP developers using MySQL—query failures caused by misspelled field names are a common issue. Although MySQL may return error messages, by leveraging the mysqli::$error property, we can effectively detect and correct these mistakes.

When using PHP's MySQLi extension for database operations, mysqli::real_connect and mysqli_stmt::attr_get are two important functions that are relatively low-level and easily overlooked. The former is used to establish a database connection, while the latter can be used to obtain some attribute states of preprocessing statements. In actual development, correctly understanding and using these two functions is of great significance to improving the stability and performance of database operations. This article will analyze the correct usage method of mysqli_stmt::attr_get, and combine the usage process of mysqli::real_connect to provide relevant information.

In PHP development, character set issues are a common but easily overlooked detail. If the character set is not set correctly, it may cause Chinese garbled code, data storage exceptions, and even trigger security vulnerabilities (such as SQL injection attacks that bypass character set detection). This article will describe how to write a that automatically detects the currently used character set after connecting to the database and automatically switches to the specified character set when needed to ensure that the application processes multilingual data stably and reliably.

Mysqli extensions are a very common tool when using PHP to manipulate MySQL databases. Sometimes we need to call $mysqli->get_charset() to get the character set information used by the current connection.

When using PHP to operate MySQL databases, character encoding issues are often one of the most troublesome problems for developers, especially when it involves non-English characters such as Chinese, Japanese, and Korean. Many people encounter Chinese garbled code after inserting or querying the database, which is often because the character set is not set correctly.

When developing modern web applications, we often need to process various types of user data, especially in social media platforms or chat applications, where users often send information with emojis (emoji). To ensure that these emojis are stored and displayed correctly, we must make sure that the character set of the database is set correctly. The mysqli::get_charset function is very important for getting the character set settings for the current database connection. With this function, we can check the character set of the currently connected and make sure it supports the emoji character set (usually utf8mb4).

When using MySQL databases, the choice of character sets is very important, especially when dealing with multilingual content or storing special characters such as emoji. MySQL provides a variety of character sets, among which UTF-8 and UTF-8mb4 are the two most commonly used. Through PHP's mysqli extension, we can obtain the character set used by the current connection through the mysqli::get_charset function, and can select the appropriate character set to support different needs. This article will explain how to support UTF-8 and UTF-8mb4 character sets through the mysqli::get_charset function.

Storage XSS (Cross-site Scripting Attack) is a common security vulnerability that allows an attacker to store a malicious script into a database by submitting malicious scripts, which can be executed when other users access the data. The main problem with this kind of attack is that malicious scripts are stored on the server side and executed in later requests, which are usually used to steal user session information or perform other malicious operations.

In PHP development, we frequently use the mysqli extension to interact with MySQL databases. When dealing with character set issues, many developers know the importance of setting the connection character set to avoid problems like garbled characters or SQL injection. However, they might not fully understand what mysqli::get_charset() can do, especially when it comes to character set filtering.

In PHP's web development, SQL Injection is a common and dangerous security threat. In order to effectively prevent SQL injection, in addition to using prepared statements, parameter binding and other methods, ensuring that the character set used by database connection is correct is also an important link. This article will focus on the usage of the mysqli::get_charset function and its role in preventing SQL injection.

When storing user input content using MySQL database, especially text fields such as comments, nicknames, and chat records, we often encounter a problem: when the user enters an Emoji emoticon or some special Unicode symbol, saving to the database will fail, or even if the save is successful, it will be garbled or question marks (?).

When using PHP to manipulate MySQL databases, we often need to pay attention to character set settings, especially when it comes to Chinese or other multibyte characters. Improper character set settings may cause garbled code or data storage errors. For character sets, the mysqli extension of PHP provides the mysqli::get_charset function, while in the MySQL command line tool (CLI), we usually use SHOW VARIABLES LIKE 'character_set_%' to view related variables.