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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 |
---|---|
2910 | */ |
2911 | $excerpt_length = apply_filters( 'excerpt_length', 55 ); |
2912 | /** |
2913 | * Filter the string in the "more" link displayed after a trimmed excerpt. |
2914 | * |
2915 | * @since 2.9.0 |
2916 | * |
2917 | * @param string $more_string The string shown within the more link. |
2918 | */ |
2919 | $excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' ); |
2920 | $text = wp_trim_words( $text, $excerpt_length, $excerpt_more ); |
2921 | } |
2922 | /** |
2923 | * Filter the trimmed excerpt string. |
2924 | * |
2925 | * @since 2.8.0 |
2926 | * |
2927 | * @param string $text The trimmed text. |
2928 | * @param string $raw_excerpt The text prior to trimming. |