ftp_set_option is a PHP FTP function that allows you to configure certain connection options, such as buffer size and transfer mode. Specifically, it can be used to adjust the internal buffer size of an FTP connection, which is especially important for transferring large files or long FTP sessions.

ftp_rename is a built-in PHP function used to rename files or directories on an FTP server. The basic syntax is as follows:

<span><span><span class="hljs-meta"><?php</span></span><span> </span><span><span class="hljs-comment">// This is an unrelated PHP code example</span></span><span>

When using PHP for FTP operations, you often need to know the directory path you are currently in. The ftp_pwd function is used for this purpose, and it can quickly return the working directory path in the current FTP session. This article will introduce in detail how to use the ftp_pwd function, and use sample code to help you quickly understand how to obtain the current FTP directory.

1. vsftpd (Very Secure FTP Daemon) vsftpd is a widely used open source FTP service software known for its security. By default, its LIST output format follows UNIX style, so ftp_rawlist() performs well when parsing such server responses.

In daily operation and maintenance or website management, we often encounter a need: monitor whether a directory file on the FTP server has been added, modified or deleted. Although it can be implemented using file synchronization tools or advanced monitoring systems, if we want to implement directory snapshot comparison in a lighter and more flexible way, the ftp_rawlist function provided by PHP is a very practical solution.

1. Connect and log in to the FTP server First, use ftp_connect to establish a connection to the FTP server, and then use the ftp_login function to log in.

In daily development, PHP's parse_url function is a common tool for processing URL strings. It can disassemble a URL into multiple components, such as protocol (scheme), host (host), port (port), path (path), query (query), etc. Although parse_url is most commonly used to parse HTTP or HTTPS URLs, it also supports parsing URLs of other protocol types, such as FTP, mailto, file, etc.