In PHP, when performing network programming, the socket_addrinfo_connect function and the socket_write function are two very useful tools. The socket_addrinfo_connect function is used to connect to the target server through an address information structure (addrinfo), while socket_write is used to write data to an established socket connection. This article will introduce how to use these two functions together to send data, along with a simple example code.

PDOStatement::fetchObject is a common method used to convert the result set of database queries into objects. However, during the actual development process, we may encounter some common errors that cause the method to not work properly. This article will introduce how to troubleshoot these common errors and comes with a comparison and analysis of PDO::FETCH_ASSOC to help developers better understand the differences and usage scenarios of these two methods.

When using PHP for database operations, many developers choose the mysqli extension to perform multiple queries. In this scenario, the next_result() method comes in handy. However, there are some notable pitfalls in using this method. Understanding its differences from PDO and exploring whether there are better alternatives is very important for building robust, maintainable systems.