PHP 8 >= 8.1.0
fsync - Synchronizes changes to the file (including meta-data)
fsync( resource$stream ): bool
This function synchronizes changes to the file, including its meta-data. This is similar to fflush, but it also instructs the operating system to write to the storage media.
The file pointer must be valid, and must point to a file successfully opened by fopen or fsockopen (and not yet closed by fclose).
Returns true on success or false on failure.
Show all examples for fsync