What is the Purpose of `

PHP Expression <<< EOB Explained

You may have encountered an unfamiliar syntax in PHP code that uses <<< EOB. This syntax, known as heredoc, is a unique way to handle string interpolation, particularly when working with HTML code.

Heredoc allows you to enclose strings within a delimiter of your choice. The syntax starts with the <<< operator followed by an identifier (EOB in your example) on a separate line. The string content is placed after the identifier, and the string is terminated by the same identifier again, placed flush left on its line.

In your specific case, the EOB is used as a delimiter for a block of HTML code. The benefit of using heredoc here is that it keeps the HTML code separate from the PHP code and facilitates readability and avoids potential syntax errors.

The identifier used as the delimiter (EOB) can be any valid PHP identifier, and it does not have a specific meaning beyond being a unique marker for the heredoc string. Typically, developers choose an identifier that is short, easy to remember, and relevant to the enclosed string.

The PHP documentation provides comprehensive details about heredoc syntax and its usage. Understanding this technique can enhance your PHP coding skills and streamline your workflow, particularly when working with complex HTML or other multi-line strings.

The above is the detailed content of What is the Purpose of `. For more information, please follow other related articles on the PHP Chinese website!