Alert: This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness. Use https://core.trac.wordpress.org/ticket/23688 instead.

_canonical_charset( string $charset )

Retrieve a canonical form of the provided charset appropriate for passing to PHP functions such as htmlspecialchars() and charset HTML attributes.


Description Description

See also See also


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Parameters Parameters

$charset

(string) (Required) A charset name.


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Return Return

(string) The canonical form of the charset.


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Source Source

File: wp-includes/functions.php

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;
}


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Changelog Changelog

Changelog
Version Description
3.6.0 Introduced.

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