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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 |
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1308 |
|
1309 | /** |
1310 | * Filters meta for a site on creation. |
1311 | * |
1312 | * @since 5.2.0 |
1313 | * |
1314 | * @param array $meta Associative array of site meta keys and values to be inserted. |
1315 | * @param int $site_id ID of site to populate. |
1316 | */ |
1317 | $site_meta = apply_filters( 'populate_site_meta', $meta, $site_id ); |
1318 |
|
1319 | $insert = ''; |
1320 | foreach ( $site_meta as $meta_key => $meta_value ) { |
1321 | if ( is_array( $meta_value ) ) { |
1322 | $meta_value = serialize( $meta_value ); |
1323 | } |
1324 | if ( ! empty( $insert ) ) { |
1325 | $insert .= ', '; |
1326 | } |