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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 |
---|---|
3819 | $excerpt_length = (int) apply_filters( 'excerpt_length', $excerpt_length ); |
3820 |
|
3821 | /** |
3822 | * Filters the string in the "more" link displayed after a trimmed excerpt. |
3823 | * |
3824 | * @since 2.9.0 |
3825 | * |
3826 | * @param string $more_string The string shown within the more link. |
3827 | */ |
3828 | $excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' ); |
3829 | $text = wp_trim_words( $text, $excerpt_length, $excerpt_more ); |
3830 | } |
3831 |
|
3832 | /** |
3833 | * Filters the trimmed excerpt string. |
3834 | * |
3835 | * @since 2.8.0 |
3836 | * |
3837 | * @param string $text The trimmed text. |