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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 |
---|---|
3233 |
|
3234 | /** |
3235 | * Filter the DISTINCT clause of the query. |
3236 | * |
3237 | * @since 2.1.0 |
3238 | * |
3239 | * @param string $distinct The DISTINCT clause of the query. |
3240 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
3241 | */ |
3242 | $distinct = apply_filters_ref_array( 'posts_distinct', array( $distinct, &$this ) ); |
3243 |
|
3244 | /** |
3245 | * Filter the LIMIT clause of the query. |
3246 | * |
3247 | * @since 2.1.0 |
3248 | * |
3249 | * @param string $limits The LIMIT clause of the query. |
3250 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
3251 | */ |