I have recently installed XAMPP with PHP version 7.x. After installation, i have configured my magento store of version 1.9.x and it show the following error.
Fatal error: Uncaught Error: Function name must be a string in app/code/core/Mage/Core/Model/Layout.php:555
Any one suggest me the solution to resolve it.
Magento 1.x is not fully compatible with PHP 7.
This specific bug can be fixed, by overriding Mage_Core_Model_Layout and change line 555 from:
$out .= $this->getBlock($callback[0])->$callback1;
to
$out .= $this->getBlock($callback[0])->{$callback1}();