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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 |
|---|---|
| 1035 | /** |
| 1036 | * Filters the HTML output of the li element in the post custom fields list. |
| 1037 | * |
| 1038 | * @since 2.2.0 |
| 1039 | * |
| 1040 | * @param string $html The HTML output for the li element. |
| 1041 | * @param string $key Meta key. |
| 1042 | * @param string $value Meta value. |
| 1043 | */ |
| 1044 | echo apply_filters( 'the_meta_key', $html, $key, $value ); |
| 1045 | } |
| 1046 | echo "</ul>\n"; |
| 1047 | } |
| 1048 | } |
| 1049 | |
| 1050 | // |
| 1051 | // Pages |
| 1052 | // |
| 1053 | |