CBXSanitizer::processAttributes

protected function processAttributes(string $attrData, string $currTag): array
	{
		$attr = [];
		$arTagAttrs = $this->extractAttributes($attrData);

		foreach($arTagAttrs as $arTagAttr)
		{
			// Attribute name
			$arTagAttr[1] = mb_strtolower($arTagAttr[1]);
			$attrAllowed = in_array($arTagAttr[1], $this->arHtmlTags[$currTag], true);

			if (!$attrAllowed && array_key_exists($arTagAttr[1], $this->additionalAttrs))
			{
				$attrAllowed = true === call_user_func($this->additionalAttrs[$arTagAttr[1]]['tag'], $currTag);
			}

			if ($attrAllowed)
			{
				// Attribute value. Wrap attribute by "
				$arTagAttr[3] = str_replace('"', "'", $arTagAttr[3]);

				if($this->IsValidAttr($arTagAttr))
				{
					$attr[$arTagAttr[1]] = $this->encodeAttributeValue($arTagAttr);
				}
			}
		}

		return $attr;
	}