htmlentities2( string $myHTML )

Convert entities, while preserving already-encoded entities.

Parameters

$myHTML

(Required) The text to be converted.

Return

(string) Converted text.

Source

File: wp-includes/formatting.php 

function htmlentities2( $myHTML ) {
	$translation_table = get_html_translation_table( HTML_ENTITIES, ENT_QUOTES );
	$translation_table[chr(38)] = '&';
	return preg_replace( "/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,3};)/", "&", strtr($myHTML, $translation_table) );
}

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Changelog

Changelog
Version Description
WP-1.2.2 Introduced.