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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 |
---|---|
106 | * - `add_term_meta` |
107 | * - `add_user_meta` |
108 | * |
109 | * @since 3.1.0 |
110 | * |
111 | * @param int $object_id ID of the object metadata is for. |
112 | * @param string $meta_key Metadata key. |
113 | * @param mixed $_meta_value Metadata value. |
114 | */ |
115 | do_action( "add_{$meta_type}_meta", $object_id, $meta_key, $_meta_value ); |
116 |
|
117 | $result = $wpdb->insert( |
118 | $table, |
119 | array( |
120 | $column => $object_id, |
121 | 'meta_key' => $meta_key, |
122 | 'meta_value' => $meta_value, |
123 | ) |
124 | ); |