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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 |
|---|---|
| 999 | /** |
| 1000 | * Filter the HTML output of the li element in the post custom fields list. |
| 1001 | * |
| 1002 | * @since 2.2.0 |
| 1003 | * |
| 1004 | * @param string $html The HTML output for the li element. |
| 1005 | * @param string $key Meta key. |
| 1006 | * @param string $value Meta value. |
| 1007 | */ |
| 1008 | echo apply_filters( 'the_meta_key', "<li><span class='post-meta-key'>$key:</span> $value</li>\n", $key, $value ); |
| 1009 | } |
| 1010 | echo "</ul>\n"; |
| 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | // |
| 1015 | // Pages |
| 1016 | // |
| 1017 | |