[DDC-1934] version_compare behavior

Sat, 9 Feb 2013 21:34:36 +0000

Note that version number with upper-case letters is not a correct PHP-standardized version number. Because of that the version_compare function might not work as you expected.
Examples:
var_dump(version_compare('2.1.0-dev', '2.1.0-beta', '<')); // expected: true
var_dump(version_compare('2.1.0-DEV', '2.1.0-BETA', '<')); // expected: true
var_dump(version_compare('2.1.0-DEV', '2.1.0-dev', '<')); // expected: false

Output:
bool(true)
bool(false)
bool(true)

I've seen in the code version_compare checks such as
version_compare(\Doctrine\Common\Version::VERSION, '2.2.0-DEV', '>=')
It's not big deal 'cause for example 2.2.0 is still > 2.2.0-DEV as well as 2.2.1, etc.
See also https://bugs.php.net/bug.php?id=62586

Doctrine Project

[DDC-1934] version_compare behavior