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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 |
|---|---|
| 3781 | * Filters the human readable difference between two timestamps. |
| 3782 | * |
| 3783 | * @since 4.0.0 |
| 3784 | * |
| 3785 | * @param string $since The difference in human readable text. |
| 3786 | * @param int $diff The difference in seconds. |
| 3787 | * @param int $from Unix timestamp from which the difference begins. |
| 3788 | * @param int $to Unix timestamp to end the time difference. |
| 3789 | */ |
| 3790 | return apply_filters( 'human_time_diff', $since, $diff, $from, $to ); |
| 3791 | } |
| 3792 | |
| 3793 | /** |
| 3794 | * Generates an excerpt from the content, if needed. |
| 3795 | * |
| 3796 | * Returns a maximum of 55 words with an ellipsis appended if necessary. |
| 3797 | * |
| 3798 | * The 55 word limit can be modified by plugins/themes using the {@see 'excerpt_length'} filter |
| 3799 | * The ' […]' string can be modified by plugins/themes using the {@see 'excerpt_more'} filter |