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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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1412 |
|
1413 | /** |
1414 | * Filters the whitelist of hosts to redirect to. |
1415 | * |
1416 | * @since 2.3.0 |
1417 | * |
1418 | * @param array $hosts An array of allowed hosts. |
1419 | * @param bool|string $host The parsed host; empty if not isset. |
1420 | */ |
1421 | $allowed_hosts = (array) apply_filters( 'allowed_redirect_hosts', array( $wpp['host'] ), isset( $lp['host'] ) ? $lp['host'] : '' ); |
1422 |
|
1423 | if ( isset( $lp['host'] ) && ( ! in_array( $lp['host'], $allowed_hosts ) && $lp['host'] != strtolower( $wpp['host'] ) ) ) { |
1424 | $location = $default; |
1425 | } |
1426 |
|
1427 | return $location; |
1428 | } |
1429 | endif; |
1430 |
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