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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 |
|---|---|
| 861 | * @uses apply_filters() Calls 'wp_redirect' hook on $location and $status. |
| 862 | * |
| 863 | * @param string $location The path to redirect to |
| 864 | * @param int $status Status code to use |
| 865 | * @return bool False if $location is not set |
| 866 | */ |
| 867 | function wp_redirect($location, $status = 302) { |
| 868 | global $is_IIS; |
| 869 | |
| 870 | $location = apply_filters('wp_redirect', $location, $status); |
| 871 | $status = apply_filters('wp_redirect_status', $status, $location); |
| 872 | |
| 873 | if ( !$location ) // allows the wp_redirect filter to cancel a redirect |
| 874 | return false; |
| 875 | |
| 876 | $location = wp_sanitize_redirect($location); |
| 877 | |
| 878 | if ( !$is_IIS && php_sapi_name() != 'cgi-fcgi' ) |
| 879 | status_header($status); // This causes problems on IIS and some FastCGI setups |