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.
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
The easiest way is to create a file with a name ending in .php (such as info.php), containing only these 3 lines: <? phpinfo(); ?> Upload this file to your web space and access it using your browser. It will show a lot of information about your webserver and the php version running on it.
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.
Facebook uses PHP 5.
oldest version is 3
Please tell me any site to know language (php, .net, java) of a site ?
PHP5
Probably 5.4. In either case try the below method to get the version on your computer <?php echo phpversion(); ?>
In terminal use the following command. php -ver