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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 |
|---|---|
| 243 | global $richedit; |
| 244 | $richedit = ( 'true' == get_user_option('rich_editing') ) ? true : false; |
| 245 | |
| 246 | $post = get_post($id); |
| 247 | |
| 248 | $post->post_content = format_to_edit($post->post_content, $richedit); |
| 249 | $post->post_content = apply_filters('content_edit_pre', $post->post_content); |
| 250 | |
| 251 | $post->post_excerpt = format_to_edit($post->post_excerpt); |
| 252 | $post->post_excerpt = apply_filters('excerpt_edit_pre', $post->post_excerpt); |
| 253 | |
| 254 | $post->post_title = format_to_edit($post->post_title); |
| 255 | $post->post_title = apply_filters('title_edit_pre', $post->post_title); |
| 256 | |
| 257 | if ($post->post_status == 'static') |
| 258 | $post->page_template = get_post_meta($id, '_wp_page_template', true); |
| 259 | |
| 260 | return $post; |
| 261 | } |