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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 |
|---|---|
| 3868 | |
| 3869 | if ( '' === trim( $text ) ) { |
| 3870 | $post = get_post( $post ); |
| 3871 | $text = get_the_content( '', false, $post ); |
| 3872 | |
| 3873 | $text = strip_shortcodes( $text ); |
| 3874 | $text = excerpt_remove_blocks( $text ); |
| 3875 | |
| 3876 | /** This filter is documented in wp-includes/post-template.php */ |
| 3877 | $text = apply_filters( 'the_content', $text ); |
| 3878 | $text = str_replace( ']]>', ']]>', $text ); |
| 3879 | |
| 3880 | /* translators: Maximum number of words used in a post excerpt. */ |
| 3881 | $excerpt_length = (int) _x( '55', 'excerpt_length' ); |
| 3882 | |
| 3883 | /** |
| 3884 | * Filters the maximum number of words in a post excerpt. |
| 3885 | * |
| 3886 | * @since 2.7.0 |