What is the start tag of php language

The opening tag (Opening Tag) of the PHP language refers to the "af5d81a8c25f39f1d6b073b03c178e10 is interpreted as PHP code, and echo "Hello World!" A PHP command will output the string "Hello World!" in the browser.

In addition to "fcf6712c3bdfcf146fbafb1ef3db4a1a " tags starting with ". However, the use of these tags is no longer recommended as they may not work properly in some environments.

It should be noted that the closing tag (Closing Tag) is not necessary. At the end of the PHP file, there is no need to use "?>" to mark the end. If the PHP file only contains PHP code, it is also generally recommended not to use a closing tag to avoid spaces or newlines at the end of the file that can cause unnecessary output or errors.

In short, the PHP start tag is a symbol that identifies the starting point of PHP code. It can be used to embed PHP code in a Web page and interpret it as a server-side script. Learning this simple markup is very basic and important when writing PHP code.

The above is the detailed content of What is the start tag of php language. For more information, please follow other related articles on the PHP Chinese website!