CODEWITHSUNDEEP
php
Bob
Bob

Reputation: 1192

How to get the PHP Version?

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.

Upvotes: 82

Views: 153879

Answers (11)

John Conde
John Conde

Reputation: 219914

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.

php 5

echo $PHP_VERSION;

That does not work in 7+ however, you can use:

php7.x

echo PHP_VERSION;

Not sure about php8.x though. constants are always faster then function calls.

Upvotes: 34

Vinnie3000
Vinnie3000

Reputation: 39

Surprised this answer hasn't been added (here's how you would actually run this from a command line):

php -r "echo 'PHP version: ' . phpversion();"

Upvotes: 2

redanimalwar
redanimalwar

Reputation: 1523

You actually do not need any of the following

  • phpversion()
  • PHP_VERSION
  • version_compare()

To properly compare the current version.

You can use the PHP_VERSION_ID constant. This is for 7.2 and its NOT 720 think 70.20.0

if ( PHP_VERSION_ID < 70200 ) {
   echo "php version is lower than 7.2";
}

Upvotes: 1

Hasanuzzaman Sattar
Hasanuzzaman Sattar

Reputation: 600

If you typecast the output of phpversion() to a floating point number, it will give you the major and minor version parts. This way you can implement PHP compatibility easily.

$version = (float)phpversion();
if ($version > 7.0) {
    //do something for php7.1 and above.
} elseif ($version === 7.0) {
    //do something for php7.0
} else {
    //do something for php5.6 or lower.
}

Upvotes: -1

alex
alex

Reputation: 490597

$version = phpversion();
print $version;

Documentation

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.

Upvotes: 122

Sarfraz
Sarfraz

Reputation: 382881

.........

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

Upvotes: 13

gabrielk
gabrielk

Reputation: 563

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()

Upvotes: 1

Alix Axel
Alix Axel

Reputation: 154673

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

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

Upvotes: 20

Jordan Running
Jordan Running

Reputation: 106097

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

Upvotes: 4

Nican
Nican

Reputation: 7945

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

Returns exactly the "5.3.0".

Upvotes: 4

Owen
Owen

Reputation: 84573

Take a look at phpversion().

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

Upvotes: 10

Related Questions