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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 |
|---|---|
| 3474 | /** |
| 3475 | * Filter whether the post slug would be bad as a flat slug. |
| 3476 | * |
| 3477 | * @since 3.1.0 |
| 3478 | * |
| 3479 | * @param bool $bad_slug Whether the post slug would be bad as a flat slug. |
| 3480 | * @param string $slug The post slug. |
| 3481 | * @param string $post_type Post type. |
| 3482 | */ |
| 3483 | if ( $post_name_check || in_array( $slug, $feeds ) || apply_filters( 'wp_unique_post_slug_is_bad_flat_slug', false, $slug, $post_type ) ) { |
| 3484 | $suffix = 2; |
| 3485 | do { |
| 3486 | $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix"; |
| 3487 | $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_ID ) ); |
| 3488 | $suffix++; |
| 3489 | } while ( $post_name_check ); |
| 3490 | $slug = $alt_post_name; |
| 3491 | } |
| 3492 | } |