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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 |
|---|---|
| 4020 | |
| 4021 | /** |
| 4022 | * Filters the trimmed excerpt string. |
| 4023 | * |
| 4024 | * @since 2.8.0 |
| 4025 | * |
| 4026 | * @param string $text The trimmed text. |
| 4027 | * @param string $raw_excerpt The text prior to trimming. |
| 4028 | */ |
| 4029 | return apply_filters( 'wp_trim_excerpt', $text, $raw_excerpt ); |
| 4030 | } |
| 4031 | |
| 4032 | /** |
| 4033 | * Trims text to a certain number of words. |
| 4034 | * |
| 4035 | * This function is localized. For languages that count 'words' by the individual |
| 4036 | * character (such as East Asian languages), the $num_words argument will apply |
| 4037 | * to the number of individual characters. |
| 4038 | * |