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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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3 | * Loads the correct template based on the visitor's url |
4 | * @package WordPress |
5 | */ |
6 | if ( defined('WP_USE_THEMES') && WP_USE_THEMES ) |
7 | /** |
8 | * Fires before determining which template to load. |
9 | * |
10 | * @since 1.5.0 |
11 | */ |
12 | do_action( 'template_redirect' ); |
13 |
|
14 | /** |
15 | * Filter whether to allow 'HEAD' requests to generate content. |
16 | * |
17 | * Provides a significant performance bump by exiting before the page |
18 | * content loads for 'HEAD' requests. See #14348. |
19 | * |
20 | * @since 3.5.0 |
21 | * |