read

boolean public
\Bitrix\Main\Data\CacheEngineFiles::read(
 mixed ,
 string $baseDir,
 string $initDir,
 string $filename,
 integer $TTL
);

This non-static method reads or writes cache in file. Returns true when file exists, not expired or successfully read.

Parameter	Description	Version
$arAllVars	Cache result.
$baseDir	Main directory for cache (usually `/bitrix/cache`).
$initDir	Initial directory.
$filename	File name
$TTL	Expiration period in seconds.