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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 |
---|---|
4868 | /** |
4869 | * Filters whether the post slug would be bad as a flat slug. |
4870 | * |
4871 | * @since 3.1.0 |
4872 | * |
4873 | * @param bool $bad_slug Whether the post slug would be bad as a flat slug. |
4874 | * @param string $slug The post slug. |
4875 | * @param string $post_type Post type. |
4876 | */ |
4877 | $is_bad_flat_slug = apply_filters( 'wp_unique_post_slug_is_bad_flat_slug', false, $slug, $post_type ); |
4878 |
|
4879 | if ( $post_name_check |
4880 | || in_array( $slug, $feeds, true ) || 'embed' === $slug |
4881 | || $conflicts_with_date_archive |
4882 | || $is_bad_flat_slug |
4883 | ) { |
4884 | $suffix = 2; |
4885 | do { |
4886 | $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix"; |