Cache::read() 

\nn\t3::Cache()->read($identifier); 

Read static file cache.

Reads the PHP file that was written via \nn\t3::Cache()->write().

$cache = \nn\t3::Cache()->read( $identifier );
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The PHP file is an executable PHP script with the return command It stores the cache content in an array.

...];
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| @return string|array

Source Code 

public function read( $identifier )
{
	if ($cache = $this->get( $identifier, true )) return $cache;
	$identifier = self::getIdentifier( $identifier );
	$path = \nn\t3::Environment()->getVarPath() . "/cache/code/nnhelpers/{$identifier}.php";
	if (!file_exists($path)) {
		return null;
	}
	$cache = require( $path );
	return $cache['_'];
}
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