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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 1500 | function update_category_cache() { |
| 1501 | return true; |
| 1502 | } |
| 1503 | |
| 1504 | function wp_head() { |
| 1505 | do_action('wp_head'); |
| 1506 | } |
| 1507 | |
| 1508 | function wp_footer() { |
| 1509 | do_action('wp_footer'); |
| 1510 | } |
| 1511 | |
| 1512 | function is_single ($post = '') { |
| 1513 | global $wp_query; |
| 1514 | |
| 1515 | if ( !$wp_query->is_single ) |
| 1516 | return false; |
| 1517 | |
| 1518 | if ( empty( $post) ) |