Then learn something... either php or amxx, they have *relatively* the same scripting style, you can find scripts in php to send commands to a hlds server...
in amxx with sql it's more complicated... you need to reload the tables each X seconds... and also you need php knowledge (unless you manage your db another way...)
it's easy to say, you just add cvars in a two colum table (variable and value as colum names for example), the server gets the cvars added and then deletes them (because it loaded them and you need them there no more...)
but this method only gives you commands executed every X seconds (depending on plugin configuration, the task you set on what delay) rather than just sending a RCON command via php
Like I said, just search on google for some scripts, you might find one already made by someone, strip some useless code out and you got yourself a command line web page
so... bottom line... you must learn

there aren't any "simple to use" things in scripting or programing
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