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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 |
|---|---|
| 2804 | $text = str_replace(']]>', ']]>', $text); |
| 2805 | |
| 2806 | /** |
| 2807 | * Filter the number of words in an excerpt. |
| 2808 | * |
| 2809 | * @since 2.7.0 |
| 2810 | * |
| 2811 | * @param int $number The number of words. Default 55. |
| 2812 | */ |
| 2813 | $excerpt_length = apply_filters( 'excerpt_length', 55 ); |
| 2814 | /** |
| 2815 | * Filter the string in the "more" link displayed after a trimmed excerpt. |
| 2816 | * |
| 2817 | * @since 2.9.0 |
| 2818 | * |
| 2819 | * @param string $more_string The string shown within the more link. |
| 2820 | */ |
| 2821 | $excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' ); |
| 2822 | $text = wp_trim_words( $text, $excerpt_length, $excerpt_more ); |