friendica-github/doc/database/db_hook.md

Table hook

addon hook registry

Fields

Field	Description	Type	Null	Key	Default	Extra
id	sequential ID	int unsigned	NO	PRI	NULL	auto_increment
hook	name of hook	varbinary(100)	NO
file	relative filename of hook handler	varbinary(200)	NO
function	function name of hook handler	varbinary(200)	NO
priority	not yet implemented - can be used to sort conflicts in hook handling by calling handlers in priority order	smallint unsigned	NO		0

Indexes

Name	Fields
PRIMARY	id
priority	priority
hook_file_function	UNIQUE, hook, file, function

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