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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 |
---|---|
5133 | } |
5134 |
|
5135 | /** |
5136 | * Filters the main network ID. |
5137 | * |
5138 | * @since 4.3.0 |
5139 | * |
5140 | * @param int $main_network_id The ID of the main network. |
5141 | */ |
5142 | return (int) apply_filters( 'get_main_network_id', $main_network_id ); |
5143 | } |
5144 |
|
5145 | /** |
5146 | * Determine whether global terms are enabled. |
5147 | * |
5148 | * @since 3.0.0 |
5149 | * |
5150 | * @staticvar bool $global_terms |
5151 | * |