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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 |
|---|---|
| 1835 | $words = preg_split("/[\n\r\t ]+/", $text, $excerpt_length + 1, PREG_SPLIT_NO_EMPTY); |
| 1836 | if ( count($words) > $excerpt_length ) { |
| 1837 | array_pop($words); |
| 1838 | $text = implode(' ', $words); |
| 1839 | $text = $text . $excerpt_more; |
| 1840 | } else { |
| 1841 | $text = implode(' ', $words); |
| 1842 | } |
| 1843 | } |
| 1844 | return apply_filters('wp_trim_excerpt', $text, $raw_excerpt); |
| 1845 | } |
| 1846 | |
| 1847 | /** |
| 1848 | * Converts named entities into numbered entities. |
| 1849 | * |
| 1850 | * @since 1.5.1 |
| 1851 | * |
| 1852 | * @param string $text The text within which entities will be converted. |
| 1853 | * @return string Text with converted entities. |