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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 |
|---|---|
| 3832 | $excerpt_length = (int) apply_filters( 'excerpt_length', $excerpt_length ); |
| 3833 | |
| 3834 | /** |
| 3835 | * Filters the string in the "more" link displayed after a trimmed excerpt. |
| 3836 | * |
| 3837 | * @since 2.9.0 |
| 3838 | * |
| 3839 | * @param string $more_string The string shown within the more link. |
| 3840 | */ |
| 3841 | $excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' ); |
| 3842 | $text = wp_trim_words( $text, $excerpt_length, $excerpt_more ); |
| 3843 | } |
| 3844 | |
| 3845 | /** |
| 3846 | * Filters the trimmed excerpt string. |
| 3847 | * |
| 3848 | * @since 2.8.0 |
| 3849 | * |
| 3850 | * @param string $text The trimmed text. |