Retrieves a canonical form of the provided charset appropriate for passing to PHP functions such as htmlspecialchars() and charset HTML attributes.
Description
See also
Parameters
$charset
stringrequired- A charset name, e.g. "UTF-8", "Windows-1252", "SJIS".
Source
function _canonical_charset( $charset ) {
if ( is_utf8_charset( $charset ) ) {
return 'UTF-8';
}
/*
* Normalize the ISO-8859-1 family of languages.
*
* This is not required for htmlspecialchars(), as it properly recognizes all of
* the input character sets that here are transformed into "ISO-8859-1".
*
* @todo Should this entire check be removed since it's not required for the stated purpose?
* @todo Should WordPress transform other potential charset equivalents, such as "latin1"?
*/
if (
( 0 === strcasecmp( 'iso-8859-1', $charset ) ) ||
( 0 === strcasecmp( 'iso8859-1', $charset ) )
) {
return 'ISO-8859-1';
}
return $charset;
}
Changelog
Version | Description |
---|---|
3.6.0 | Introduced. |
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