PHP Exercises : Print current PHP version
PHP : Exercise-17 with Solution
Write a PHP script to print current PHP version.
Note : Do not use phpinfo() function.
Sample Solution: -
<?php echo 'Current PHP version : ' . phpversion(); // prints e.g. '2.0' or nothing if the extension isn't enabled echo phpversion('tidy')."\n"; ?>
Current PHP version : 7.0.15-0ubuntu0.16.04.4
Note: string phpversion (string $extension ): Returns a string containing the version of the currently running PHP parser or extension.
PHP Release History:
|Version||Release date||Supported until|
|1.0||8 June 1995|
|2.0||1 November 1997|
|3.0||6 June 1998||20 October 2000|
|4.0||22 May 2000||23 June 2001|
|4.1||10 December 2001||12 March 2002|
|4.2||22 April 2002||6 September 2002|
|4.3||27 December 2002||31 March 2005|
|4.4||11 July 2005||7 August 2008|
|5.0||13 July 2004||5 September 2005|
|5.1||24 November 2005||24 August 2006|
|5.2||2 November 2006||6 January 2011|
|5.3||30 June 2009||14 August 2014|
|5.4||1 March 2012||3 September 2015|
|5.5||20 June 2013||10 July 2016|
|5.6||28 August 2014||31 December 2018|
|7.0||3 December 2015||3 December 2018|
|7.1||1 December 2016||1 December 2019|
|7.2||30 November 2017||30 November 2020|
Beginning on June 28, 2011, the PHP Group implemented a timeline for the release of new versions of PHP. Under this system, at least one release should occur every month. More details: http://php.net/releases/
PHP Code Editor:
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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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