Reply To: What is the thing “a:0:{…}” called?

Jacob Peattie — Wed, 16 Aug 2017 14:09:07 +0000

It’s a serialized Array. It’s how WordPress (and other PHP applications) store Arrays in the database. You can convert it to an array with the unserialize function. Note however that WordPress will handle the serialization and unserialization for you when you use functions like add_option(), get_option(), add_post_meta(), get_post_meta(), get_theme_mod(), etc. on an array.

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Reply To: What is the thing “a:0:{…}” called?