wp_kses_normalize_entities() WordPress Function

function wp_kses_normalize_entities( $string, $context = 'html' ) {
	// Disarm all entities by converting & to &amp;
	$string = str_replace( '&', '&amp;', $string );

	// Change back the allowed entities in our list of allowed entities.
	if ( 'xml' === $context ) {
		$string = preg_replace_callback( '/&amp;([A-Za-z]{2,8}[0-9]{0,2});/', 'wp_kses_xml_named_entities', $string );
	} else {
		$string = preg_replace_callback( '/&amp;([A-Za-z]{2,8}[0-9]{0,2});/', 'wp_kses_named_entities', $string );
	}
	$string = preg_replace_callback( '/&amp;#(0*[0-9]{1,7});/', 'wp_kses_normalize_entities2', $string );
	$string = preg_replace_callback( '/&amp;#[Xx](0*[0-9A-Fa-f]{1,6});/', 'wp_kses_normalize_entities3', $string );

	return $string;
}
Used By	Description
wp-includes/formatting.php:esc_url()	Checks and cleans a URL.
wp-includes/formatting.php:_wp_specialchars()	Converts a number of special characters into their HTML entities.
wp-includes/kses.php:wp_kses()	Filters text content and strips out disallowed HTML.