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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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1318 |
|
1319 | /** |
1320 | * Filters the whitelist of hosts to redirect to. |
1321 | * |
1322 | * @since 2.3.0 |
1323 | * |
1324 | * @param array $hosts An array of allowed hosts. |
1325 | * @param bool|string $host The parsed host; empty if not isset. |
1326 | */ |
1327 | $allowed_hosts = (array) apply_filters( 'allowed_redirect_hosts', array($wpp['host']), isset($lp['host']) ? $lp['host'] : '' ); |
1328 |
|
1329 | if ( isset($lp['host']) && ( !in_array($lp['host'], $allowed_hosts) && $lp['host'] != strtolower($wpp['host'])) ) |
1330 | $location = $default; |
1331 |
|
1332 | return $location; |
1333 | } |
1334 | endif; |
1335 |
|
1336 | if ( ! function_exists('wp_notify_postauthor') ) : |