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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 |
---|---|
2559 | */ |
2560 | $excerpt_length = apply_filters( 'excerpt_length', 55 ); |
2561 | /** |
2562 | * Filter the string in the "more" link displayed after a trimmed excerpt. |
2563 | * |
2564 | * @since 2.9.0 |
2565 | * |
2566 | * @param string $more_string The string shown within the more link. |
2567 | */ |
2568 | $excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' ); |
2569 | $text = wp_trim_words( $text, $excerpt_length, $excerpt_more ); |
2570 | } |
2571 | /** |
2572 | * Filter the trimmed excerpt string. |
2573 | * |
2574 | * @since 2.8.0 |
2575 | * |
2576 | * @param string $text The trimmed text. |
2577 | * @param string $raw_excerpt The text prior to trimming. |