function wp_kses_normalize_entities2( $matches ) { if ( empty( $matches[1
] ) ) { return '';
} $i =
$matches[1
];
if ( valid_unicode( $i ) ) { $i =
str_pad( ltrim( $i, '0'
), 3, '0', STR_PAD_LEFT
);
$i = "&#
$i;";
} else { $i = "&#
$i;";
} return $i;
}/**
* Callback for `wp_kses_normalize_entities()` for regular expression.
*
* This function helps `wp_kses_normalize_entities()` to only accept valid Unicode
* numeric entities in hex form.
*
* @since 2.7.0
* @access private
* @ignore
*
* @param array $matches `preg_replace_callback()` matches array.
* @return string Correctly encoded entity.
*/