Why 16.04.4 packages are older than of 16.04.1 packages?

Question

How to read the Ubuntu version information there? Because to me it seems that newer release is targeted with an older PHP sqlite version.

Answer 1

Because both 7.0.15-0ubuntu0.16.04.1 [1] and 7.0.15-0ubuntu0.16.04.4 [2] have been released. So the newer version of 7.0.15 which is 7.0.15-0ubuntu0.16.04.4 takes over, while the only available revision of 7.0.18 is: 7.0.18-0ubuntu0.16.04.1.

so if I run:

apt-cache madison php7.0-sqlite3 | grep -iv source

I will get:

php7.0-sqlite3 | 7.0.18-0ubuntu0.16.04.1 | http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
php7.0-sqlite3 | 7.0.15-0ubuntu0.16.04.4 | http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
php7.0-sqlite3 | 7.0.4-7ubuntu2 | http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages

and to see which version is candidate for installation:

apt-cache policy php7.0-sqlite3

You'll see that the candidate version for installation is: 7.0.18-0ubuntu0.16.04.1.

You can check published versions here which are:

php7.0-sqlite3 7.0.15-0ubuntu0.16.04.4 in amd64 (Security)
php7.0-sqlite3 7.0.15-0ubuntu0.16.04.4 in amd64 (Updates)
php7.0-sqlite3 7.0.18-0ubuntu0.16.04.1 in amd64 (Proposed)