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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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397 |
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398 | /** |
399 | * Filters the network query clauses. |
400 | * |
401 | * @since 4.6.0 |
402 | * |
403 | * @param array $pieces A compacted array of network query clauses. |
404 | * @param WP_Network_Query $this Current instance of WP_Network_Query (passed by reference). |
405 | */ |
406 | $clauses = apply_filters_ref_array( 'networks_clauses', array( compact( $pieces ), &$this ) ); |
407 |
|
408 | $fields = isset( $clauses['fields'] ) ? $clauses['fields'] : ''; |
409 | $join = isset( $clauses['join'] ) ? $clauses['join'] : ''; |
410 | $where = isset( $clauses['where'] ) ? $clauses['where'] : ''; |
411 | $orderby = isset( $clauses['orderby'] ) ? $clauses['orderby'] : ''; |
412 | $limits = isset( $clauses['limits'] ) ? $clauses['limits'] : ''; |
413 | $groupby = isset( $clauses['groupby'] ) ? $clauses['groupby'] : ''; |
414 |
|
415 | if ( $where ) { |