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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 |
|---|---|
| 423 | if ( file_exists( TEMPLATEPATH . '/functions.php' ) ) |
| 424 | include( TEMPLATEPATH . '/functions.php' ); |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * Fires after the theme is loaded. |
| 429 | * |
| 430 | * @since 3.0.0 |
| 431 | */ |
| 432 | do_action( 'after_setup_theme' ); |
| 433 | |
| 434 | // Set up current user. |
| 435 | $GLOBALS['wp']->init(); |
| 436 | |
| 437 | /** |
| 438 | * Fires after WordPress has finished loading but before any headers are sent. |
| 439 | * |
| 440 | * Most of WP is loaded at this stage, and the user is authenticated. WP continues |
| 441 | * to load on the {@see 'init'} hook that follows (e.g. widgets), and many plugins instantiate |