Default Protocol and Port Number of a URL
What Happens If Protocol or Port Number Is Missing in a URL?
From a syntax point of view, all URL parts are optional. If some parts are not included in a URL, the browser and the hosting computer will provide default values. Here are some rules about the protocol name, host name, and port number:
1. If the protocol name part is missing, but the host name part is given, "http://" will be used as the default value. The following URLs are identical:
2. If the port number part is missing, but the host name part is given, the default port number that matches the protocol name will be used. The following URLs are identical:
dev.fyicenter.com/faq/xhtml/ dev.fyicenter.com:80/faq/xhtml/ http://dev.fyicenter.com/faq/xhtml/ http://dev.fyicenter.com:80/faq/xhtml/
3. If the port number part is given, the host name part must be specified. The following URLs are invalid:
2017-07-07, 278👍, 0💬
How To Connect to MySQL from a PHP Script in PHP? If you want access the MySQL server, you must crea...
How To Generate and Process a Form with the Same Script in PHP? In previous exercises, a Web form is...
Can You Specify the "new line" Character in Single-Quoted Strings? You can not specify the "new line...
How To Select an Exiting Database in PHP? The first thing after you have created a connection object...
How To Loop through an Array without Using "foreach" in PHP? PHP offers the following functions to a...