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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 |
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115 |
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116 | if ( '' != $pagestruct && 'draft' != $post->post_status ) { |
117 | $link = get_page_uri($id); |
118 | $link = str_replace('%pagename%', $link, $pagestruct); |
119 | $link = get_option('home') . "/$link/"; |
120 | } else { |
121 | $link = get_option('home') . "/?page_id=$id"; |
122 | } |
123 |
|
124 | return apply_filters( '_get_page_link', $link, $id ); |
125 | } |
126 |
|
127 | function get_attachment_link($id = false) { |
128 | global $post, $wp_rewrite; |
129 |
|
130 | $link = false; |
131 |
|
132 | if (! $id) { |
133 | $id = $post->ID; |