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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 |
---|---|
144 | * |
145 | * @since 1.5.0 |
146 | * |
147 | * @param int $id Optional. Post ID. |
148 | * @return string |
149 | */ |
150 | function get_the_guid( $id = 0 ) { |
151 | $post = &get_post($id); |
152 |
|
153 | return apply_filters('get_the_guid', $post->guid); |
154 | } |
155 |
|
156 | /** |
157 | * Display the post content. |
158 | * |
159 | * @since 0.71 |
160 | * |
161 | * @param string $more_link_text Optional. Content for when there is more text. |
162 | * @param string $stripteaser Optional. Teaser content before the more text. |