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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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268 | * Fires before the WP_User_Query has been parsed. |
269 | * |
270 | * The passed WP_User_Query object contains the query variables, |
271 | * not yet passed into SQL. |
272 | * |
273 | * @since 4.0.0 |
274 | * |
275 | * @param WP_User_Query $query Current instance of WP_User_Query (passed by reference). |
276 | */ |
277 | do_action_ref_array( 'pre_get_users', array( &$this ) ); |
278 |
|
279 | // Ensure that query vars are filled after 'pre_get_users'. |
280 | $qv =& $this->query_vars; |
281 | $qv = $this->fill_query_vars( $qv ); |
282 |
|
283 | $allowed_fields = array( |
284 | 'id', |
285 | 'user_login', |
286 | 'user_pass', |