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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 |
|---|---|
| 191 | $post = get_post($id); |
| 192 | |
| 193 | /** |
| 194 | * Filter the Global Unique Identifier (guid) of the post. |
| 195 | * |
| 196 | * @since 1.5.0 |
| 197 | * |
| 198 | * @param string $post_guid Global Unique Identifier (guid) of the post. |
| 199 | */ |
| 200 | return apply_filters( 'get_the_guid', $post->guid ); |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * Display the post content. |
| 205 | * |
| 206 | * @since 0.71 |
| 207 | * |
| 208 | * @param string $more_link_text Optional. Content for when there is more text. |
| 209 | * @param bool $strip_teaser Optional. Strip teaser content before the more text. Default is false. |