delete_{$meta_type}meta
Action Hook: Fires immediately before deleting post or comment metadata of a specific type.
Source: wp-includes/meta.php:1055
deleted_{$meta_type}meta
Action Hook: Fires immediately after deleting post or comment metadata of a specific type.
Source: wp-includes/meta.php:1086
get_metadata()
Function: Retrieves the value of a metadata field for the specified object type and ID.
Source: wp-includes/meta.php:573
is_allowed_http_origin()
Function: Determines if the HTTP origin is an authorized one.
Source: wp-includes/http.php:458
send_origin_headers()
Function: Send Access-Control-Allow-Origin and related headers if the current request is from an allowed origin.
Source: wp-includes/http.php:493
allowed_http_origin
Filter Hook: Change the allowed HTTP origin result.
Source: wp-includes/http.php:477
wp_http_validate_url()
Function: Validate a URL for safe use in the HTTP API.
Source: wp-includes/http.php:521
http_request_host_is_external
Filter Hook: Check if HTTP request is external or not.
Source: wp-includes/http.php:597
allowed_http_request_hosts()
Function: Mark allowed redirect hosts safe for HTTP requests as well.
Source: wp-includes/http.php:644
http_headers_useragent
Filter Hook: Filters the user agent value sent with an HTTP request.
Source: wp-includes/http.php:837