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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 |
|---|---|
| 1812 | $excerpt_length = apply_filters('excerpt_length', 55); |
| 1813 | $excerpt_more = apply_filters('excerpt_more', ' ' . '[...]'); |
| 1814 | $words = explode(' ', $text, $excerpt_length + 1); |
| 1815 | if (count($words) > $excerpt_length) { |
| 1816 | array_pop($words); |
| 1817 | $text = implode(' ', $words); |
| 1818 | $text = $text . $excerpt_more; |
| 1819 | } |
| 1820 | } |
| 1821 | return apply_filters('wp_trim_excerpt', $text, $raw_excerpt); |
| 1822 | } |
| 1823 | |
| 1824 | /** |
| 1825 | * Converts named entities into numbered entities. |
| 1826 | * |
| 1827 | * @since 1.5.1 |
| 1828 | * |
| 1829 | * @param string $text The text within which entities will be converted. |
| 1830 | * @return string Text with converted entities. |