core-bundle/src/Resources/contao/library/Contao/System.php
protected static function readPhpFileWithoutTags($strName)
	{
		@trigger_error('Using System::readPhpFileWithoutTags() has been deprecated and will no longer work in Contao 5.0. Use the Contao\CoreBundle\Config\Loader\PhpFileLoader instead.', E_USER_DEPRECATED);

		$rootDir = self::getContainer()->getParameter('kernel.project_dir');

		// Convert to absolute path
		if (strpos($strName, $rootDir . '/') === false)
		{
			$strName = $rootDir . '/' . $strName;
		}

		$loader = new PhpFileLoader();

		return $loader->load($strName);
	}
protected static function readPhpFileWithoutTags($strName)
	{
		@trigger_error('Using System::readPhpFileWithoutTags() has been deprecated and will no longer work in Contao 5.0. Use the Contao\CoreBundle\Config\Loader\PhpFileLoader instead.', E_USER_DEPRECATED);

		$rootDir = self::getContainer()->getParameter('kernel.project_dir');

		// Convert to absolute path
		if (strpos($strName, $rootDir . '/') === false)
		{
			$strName = $rootDir . '/' . $strName;
		}

		$loader = new PhpFileLoader();

		return $loader->load($strName);
	}
Read the contents of a PHP file, stripping the opening and closing PHP tags

@param string $strName The name of the PHP file

@return string The PHP code without the PHP tags

@deprecated Deprecated since Contao 4.0, to be removed in Contao 5.0.
Use the Contao\CoreBundle\Config\Loader\PhpFileLoader instead.