How to get the PHP Version?

Question

Is there a way to check the version of PHP that executed a particular script from within that script? So for example, the following snippet

$version = way_to_get_version();
print $version;

would print 5.3.0 on one machine, and 5.3.1 on another machine.

alex_31671 · Answer

$version = phpversion();
print $version;

However, for best practice, I would use the constant PHP_VERSION. No function overhead, and cleaner IMO.

Also, be sure to use version_compare() if you are comparing PHP versions for compatibility.

user_250259 · Answer

Technically the best way to do it is with the constant PHP_VERSION as it requires no function call and the overhead that comes with it.

echo PHP_VERSION;

constants are always faster then function calls.

user_89771 · Answer

You can either use the phpversion() function or the PHP_VERSION constant.

To compare versions you should always rely on version_compare().

user_139459 · Answer

.........

if (version_compare(phpversion(), '5', '>='))
{
       // act accordintly
}

Owen_4853 · Answer

Take a look at phpversion().

echo "Current version is PHP " . phpversion();

user_99966 · Answer

http://us.php.net/manual/en/function.phpversion.php

Returns exactly the "5.3.0".

user_179125 · Answer

phpversion() will tell you the currently running PHP version.

user_7559183 · Answer

you can use phpversion() function to get php version

eg. echo 'PHP version: ' . phpversion();

user_4531582 · Answer

You can use phpversion(); function to find the current version

user_146517 · Answer

phpversion() is one way. As John conde said, PHP_VERSION is another (that I didn't know about 'till now).

You may also be interested in function_exists()