is_protected_meta()
Function: Determine whether a meta key is protected.
Source: wp-includes/meta.php:930
Function: Determine whether a meta key is protected.
Source: wp-includes/meta.php:930
Function: Sanitize meta value.
Source: wp-includes/meta.php:958
Function: Sanitize a mime type
Source: wp-includes/formatting.php:4849
Filter Hook: Filters a mime type following sanitization.
Source: wp-includes/formatting.php:4859
Function: Send a HTTP header to limit rendering of pages to same origin iframes.
Source: wp-includes/functions.php:5208