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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 |
|---|---|
| 3810 | $excerpt_length = intval( _x( '55', 'excerpt_length' ) ); |
| 3811 | |
| 3812 | /** |
| 3813 | * Filters the maximum number of words in a post excerpt. |
| 3814 | * |
| 3815 | * @since 2.7.0 |
| 3816 | * |
| 3817 | * @param int $number The maximum number of words. Default 55. |
| 3818 | */ |
| 3819 | $excerpt_length = (int) apply_filters( 'excerpt_length', $excerpt_length ); |
| 3820 | |
| 3821 | /** |
| 3822 | * Filters the string in the "more" link displayed after a trimmed excerpt. |
| 3823 | * |
| 3824 | * @since 2.9.0 |
| 3825 | * |
| 3826 | * @param string $more_string The string shown within the more link. |
| 3827 | */ |
| 3828 | $excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' ); |