The most recent version of PHP is 7.0.7 as of 2016-06-05, it has not quite yet gotten to version 79 or 7.9.
The next version is PHP 6.
The lastest stable versions of PHP (as of March 3, 2012): PHP 5.4: Version 5.4.1 PHP 5.3: Version 5.3.11
As of 19 December 2017, the latest stable version of PHP is 7.2.0.
Any version released before the current stable release is considered an old version of PHP.
PHP++ is an object-oriented version of the PHP programming language. ++ is used in programming to increment a variable by one so it means an improved version of PHP.
they are the same, but php 5 has improvements in design, security, and stablity. it is basically a new version. if you want more details just go to http://www.php.net and find the recent changes in php.
Facebook uses PHP 5.
oldest version is 3
Probably 5.4. In either case try the below method to get the version on your computer <?php echo phpversion(); ?>
Set up a PHP file and put the following in it. <?php phpinfo(); ?> Then run it on the server, it will have all the information you will need including what version you are running.
In terminal use the following command. php -ver