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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 |
|---|---|
| 141 | * |
| 142 | * @since 1.5.0 |
| 143 | * |
| 144 | * @param int $id Optional. Post ID. |
| 145 | * @return string |
| 146 | */ |
| 147 | function get_the_guid( $id = 0 ) { |
| 148 | $post = &get_post($id); |
| 149 | |
| 150 | return apply_filters('get_the_guid', $post->guid); |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Display the post content. |
| 155 | * |
| 156 | * @since 0.71 |
| 157 | * |
| 158 | * @param string $more_link_text Optional. Content for when there is more text. |
| 159 | * @param string $stripteaser Optional. Teaser content before the more text. |