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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 |
|---|---|
| 3782 | /** |
| 3783 | * Filter whether the post slug would be bad as a flat slug. |
| 3784 | * |
| 3785 | * @since 3.1.0 |
| 3786 | * |
| 3787 | * @param bool $bad_slug Whether the post slug would be bad as a flat slug. |
| 3788 | * @param string $slug The post slug. |
| 3789 | * @param string $post_type Post type. |
| 3790 | */ |
| 3791 | if ( $post_name_check || in_array( $slug, $feeds ) || 'embed' === $slug || $conflicts_with_date_archive || apply_filters( 'wp_unique_post_slug_is_bad_flat_slug', false, $slug, $post_type ) ) { |
| 3792 | $suffix = 2; |
| 3793 | do { |
| 3794 | $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix"; |
| 3795 | $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_ID ) ); |
| 3796 | $suffix++; |
| 3797 | } while ( $post_name_check ); |
| 3798 | $slug = $alt_post_name; |
| 3799 | } |
| 3800 | } |