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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 |
---|---|
3826 | $excerpt_length = (int) _x( '55', 'excerpt_length' ); |
3827 |
|
3828 | /** |
3829 | * Filters the maximum number of words in a post excerpt. |
3830 | * |
3831 | * @since 2.7.0 |
3832 | * |
3833 | * @param int $number The maximum number of words. Default 55. |
3834 | */ |
3835 | $excerpt_length = (int) apply_filters( 'excerpt_length', $excerpt_length ); |
3836 |
|
3837 | /** |
3838 | * Filters the string in the "more" link displayed after a trimmed excerpt. |
3839 | * |
3840 | * @since 2.9.0 |
3841 | * |
3842 | * @param string $more_string The string shown within the more link. |
3843 | */ |
3844 | $excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' ); |