I've updated the patch because the previous one wasn't respecting the "Group" page filter selection

Really nice job, Ron.
I've little updated your patch for 2.4.6 zabbix version. I've also added "Host Name" column to export file.

For those how does not know how to apply patch:
1)Copy patch file to "/usr/share/zabbix" directory;
2)Go to this directory;
3)Run:
patch -p1 < export-inventories-to-csv246.patch

To work filtering 2.4.7 had to change zbx_strtolower on mb_strtolower and zbx_strpos on mb_strpos

Updated for 3.0

For 3.2.4 I having trouble with inventory.host.list.php when applying patch for 3.0.3 version, so it didn`t patched. With hostinventories.php where`s no problem.

Hello, everyone!

I've added your patches for 2.4 and 3.0 to https://github.com/zabbix/zabbix-patches - now it could be applied easily with command-line tool.
3.0 patch was not applied well into 3.0.9 and I had to alter last part slightly, but I have no ability to test it — if I've done it wrong, please write me.