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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 |
|---|---|
| 4001 | $excerpt_length = (int) apply_filters( 'excerpt_length', $excerpt_length ); |
| 4002 | |
| 4003 | /** |
| 4004 | * Filters the string in the "more" link displayed after a trimmed excerpt. |
| 4005 | * |
| 4006 | * @since 2.9.0 |
| 4007 | * |
| 4008 | * @param string $more_string The string shown within the more link. |
| 4009 | */ |
| 4010 | $excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' ); |
| 4011 | $text = wp_trim_words( $text, $excerpt_length, $excerpt_more ); |
| 4012 | |
| 4013 | } |
| 4014 | |
| 4015 | /** |
| 4016 | * Filters the trimmed excerpt string. |
| 4017 | * |
| 4018 | * @since 2.8.0 |
| 4019 | * |