# Getting the Zend Framework Version

`Zend_Version` provides a class constant `Zend_Version::VERSION` that contains a string identifying the version number of your Zend Framework installation. `Zend_Version::VERSION` might contain "1.7.4", for example.

The static method `Zend_Version::compareVersion($version)` is based on the PHP function `version_compare()`. This method returns -1 if the specified version is older than the installed Zend Framework version, 0 if they are the same and +1 if the specified version is newer than the version of the Zend Framework installation.

## Example of the compareVersion() Method

    // returns -1, 0 or 1
    $cmp = Zend_Version::compareVersion('2.0.0');