src/Debug/Utilities.php
public static function parseAttribString($str, $dataDecode = true)
    {
        $attribs = array();
        $regexAttribs = '/\b([\w\-]+)\b(?: \s*=\s*(["\'])(.*?)\\2 | \s*=\s*(\S+) )?/xs';
        \preg_match_all($regexAttribs, $str, $matches);
        $keys = \array_map('strtolower', $matches[1]);
        $values = \array_replace($matches[3], \array_filter($matches[4], 'strlen'));
        foreach ($keys as $i => $k) {
            $attribs[$k] = $values[$i];
            if (\in_array($k, self::$htmlBoolAttr)) {
                $attribs[$k] = true;
            }
        }
        \ksort($attribs);
        foreach ($attribs as $k => $v) {
            if (\is_string($v)) {
                $attribs[$k] = \htmlspecialchars_decode($v);
            }
            $isDataAttrib = \strpos($k, 'data-') === 0;
            if ($isDataAttrib && $dataDecode) {
                $val = $attribs[$k];
                $attribs[$k] = \json_decode($attribs[$k], true);
                if ($attribs[$k] === null && $val !== 'null') {
                    $attribs[$k] = \json_decode('"'.$val.'"', true);
                }
            }
        }
        return $attribs;
    }
public static function parseAttribString($str, $dataDecode = true)
    {
        $attribs = array();
        $regexAttribs = '/\b([\w\-]+)\b(?: \s*=\s*(["\'])(.*?)\\2 | \s*=\s*(\S+) )?/xs';
        \preg_match_all($regexAttribs, $str, $matches);
        $keys = \array_map('strtolower', $matches[1]);
        $values = \array_replace($matches[3], \array_filter($matches[4], 'strlen'));
        foreach ($keys as $i => $k) {
            $attribs[$k] = $values[$i];
            if (\in_array($k, self::$htmlBoolAttr)) {
                $attribs[$k] = true;
            }
        }
        \ksort($attribs);
        foreach ($attribs as $k => $v) {
            if (\is_string($v)) {
                $attribs[$k] = \htmlspecialchars_decode($v);
            }
            $isDataAttrib = \strpos($k, 'data-') === 0;
            if ($isDataAttrib && $dataDecode) {
                $val = $attribs[$k];
                $attribs[$k] = \json_decode($attribs[$k], true);
                if ($attribs[$k] === null && $val !== 'null') {
                    $attribs[$k] = \json_decode('"'.$val.'"', true);
                }
            }
        }
        return $attribs;
    }
Parse string -o- attributes into a key=>value array

@param string  $str        string to parse
@param boolean $dataDecode (true) whether to json_decode data attributes

@return array