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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
6139 | } |
6140 |
|
6141 | /** |
6142 | * Filters the main network ID. |
6143 | * |
6144 | * @since 4.3.0 |
6145 | * |
6146 | * @param int $main_network_id The ID of the main network. |
6147 | */ |
6148 | return (int) apply_filters( 'get_main_network_id', $main_network_id ); |
6149 | } |
6150 |
|
6151 | /** |
6152 | * Determine whether global terms are enabled. |
6153 | * |
6154 | * @since 3.0.0 |
6155 | * |
6156 | * @return bool True if multisite and global terms enabled. |
6157 | */ |