_canonical_charset() WP 3.6.0
Retrieve a canonical form of the provided charset appropriate for passing to PHP functions such as htmlspecialchars() and charset HTML attributes.
This is an internal function for using it by WP core itself. It's not recommended to use this function in your code.
No Hooks.
Return
String. The canonical form of the charset.
Usage
_canonical_charset( $charset );
- $charset(string) (required)
- A charset name.
Notes
Changelog
| Since 3.6.0 | Introduced. |
Code of _canonical_charset() canonical charset WP 5.8.2
function _canonical_charset( $charset ) {
if ( 'utf-8' === strtolower( $charset ) || 'utf8' === strtolower( $charset ) ) {
return 'UTF-8';
}
if ( 'iso-8859-1' === strtolower( $charset ) || 'iso8859-1' === strtolower( $charset ) ) {
return 'ISO-8859-1';
}
return $charset;
}