invalid string comparation

[arturwwl]

przelewy24-bundle/Exception/Exception.php

public static function getExceptionsFromString($string, $type)
    {
        $array = \explode('&', $string);
        if ($array[0] == 'error=0' || $string = "") {
            return;
        }

        throw new \Exception($type . ': ' . $string);
    }

String in exception always will be empty. Should be

public static function getExceptionsFromString($string, $type)
    {
        $array = \explode('&', $string);
        if ($array[0] == 'error=0' || $string == "") {
            return;
        }

        throw new \Exception($type . ': ' . $string);
    }