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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 |
|---|---|
| 534 | * Filter SELECT FOUND_ROWS() query for the current WP_User_Query instance. |
| 535 | * |
| 536 | * @since 3.2.0 |
| 537 | * |
| 538 | * @global wpdb $wpdb WordPress database abstraction object. |
| 539 | * |
| 540 | * @param string $sql The SELECT FOUND_ROWS() query for the current WP_User_Query. |
| 541 | */ |
| 542 | if ( isset( $qv['count_total'] ) && $qv['count_total'] ) |
| 543 | $this->total_users = $wpdb->get_var( apply_filters( 'found_users_query', 'SELECT FOUND_ROWS()' ) ); |
| 544 | |
| 545 | if ( !$this->results ) |
| 546 | return; |
| 547 | |
| 548 | if ( 'all_with_meta' == $qv['fields'] ) { |
| 549 | cache_users( $this->results ); |
| 550 | |
| 551 | $r = array(); |
| 552 | foreach ( $this->results as $userid ) |