What means "a:0:{}"

Ferdinand Gruber <[email protected]> Wed, 3 Apr 2019 00:04:47 +0200
Newsgroups gmane.comp.horde.kronolith
Message-ID <[email protected]>
Hi,

in table kronolith_events I see some fields with this value "a:0:{}".

That seems to be the default value for several fields.

Please can you explain to me what this entry means. Is this value important?

Thank you very much.

-- 
Regards from Austria
Ferdinand Gruber

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