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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 |
---|---|
3306 | */ |
3307 | $excerpt_length = apply_filters( 'excerpt_length', 55 ); |
3308 | /** |
3309 | * Filters the string in the "more" link displayed after a trimmed excerpt. |
3310 | * |
3311 | * @since 2.9.0 |
3312 | * |
3313 | * @param string $more_string The string shown within the more link. |
3314 | */ |
3315 | $excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' ); |
3316 | $text = wp_trim_words( $text, $excerpt_length, $excerpt_more ); |
3317 | } |
3318 | /** |
3319 | * Filters the trimmed excerpt string. |
3320 | * |
3321 | * @since 2.8.0 |
3322 | * |
3323 | * @param string $text The trimmed text. |
3324 | * @param string $raw_excerpt The text prior to trimming. |