PHP Exercises : PHP browser detection script
PHP : Exercise-6 with Solution
Write a simple PHP browser detection script.
Sample Output : Your-User Agent is: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.114 Safari/537.36
Web browse: A web browser is a software application for accessing information on the World Wide Web. Each individual web page, image, and video is identified by a distinct URL. These URLs, enable browsers to retrieve and display them on the user's device. A web browser is not the same thing as a search engine, though the two are often confused. For a user, a search engine is just a website, such as google.com, that stores searchable data about other websites. But in order to connect to and display websites on their device, a user needs to have a web browser installed.
Sample Solution: -
<?php echo "Your User Agent is :" . $_SERVER ['HTTP_USER_AGENT']; ?>
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PHP: Tips of the Day
Why shouldn't I use mysql_* functions in PHP?
The MySQL extension:
- Is not under active development
- Is officially deprecated as of PHP 5.5 (released June 2013).
- Has been removed entirely as of PHP 7.0 (released December 2015)
- This means that as of 31 Dec 2018 it does not exist in any supported version of PHP. If you are using a version of PHP which supports it, you are using a version which doesn't get security problems fixed.
- Lacks an OO interface
- Doesn't support:
- Non-blocking, asynchronous queries
- Prepared statements or parameterized queries
- Stored procedures
- Multiple Statements
- The "new" password authentication method (on by default in MySQL 5.6; required in 5.7)
- Any of the new functionality in MySQL 5.1 or later
Since it is deprecated, using it makes your code less future proof.
Lack of support for prepared statements is particularly important as they provide a clearer, less error-prone method of escaping and quoting external data than manually escaping it with a separate function call.
Ref : https://bit.ly/2BIIsF0
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