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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 |
|---|---|
| 4238 | /** |
| 4239 | * Filters whether the post slug would be bad as a flat slug. |
| 4240 | * |
| 4241 | * @since 3.1.0 |
| 4242 | * |
| 4243 | * @param bool $bad_slug Whether the post slug would be bad as a flat slug. |
| 4244 | * @param string $slug The post slug. |
| 4245 | * @param string $post_type Post type. |
| 4246 | */ |
| 4247 | 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 ) ) { |
| 4248 | $suffix = 2; |
| 4249 | do { |
| 4250 | $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix"; |
| 4251 | $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_ID ) ); |
| 4252 | $suffix++; |
| 4253 | } while ( $post_name_check ); |
| 4254 | $slug = $alt_post_name; |
| 4255 | } |
| 4256 | } |