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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.
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1243 |
|
1244 | /** |
1245 | * Filters the redirect HTTP response status code to use. |
1246 | * |
1247 | * @since 2.3.0 |
1248 | * |
1249 | * @param int $status The HTTP response status code to use. |
1250 | * @param string $location The path or URL to redirect to. |
1251 | */ |
1252 | $status = apply_filters( 'wp_redirect_status', $status, $location ); |
1253 |
|
1254 | if ( ! $location ) { |
1255 | return false; |
1256 | } |
1257 |
|
1258 | if ( $status < 300 || 399 < $status ) { |
1259 | wp_die( __( 'HTTP redirect status code must be a redirection code, 3xx.' ) ); |
1260 | } |
1261 |
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