Robuta

https://www.php.net/manual/es/function.fclose.php

PHP: fclose - Manual

php fclose manual

https://www.microfocus.com/documentation/silk-performer/200/ja/silkperformer-200-webhelp-ja/SILKPERF-C9211413-FCLOSEFUNCTION-REF.html

FClose Function

fclose function

https://docs.oracle.com/cd/E19146-01/820-7980/6nj708did/index.html

system_fclose() Function (Sun Java System Web Server 7.0 Update 6 NSAPI Developer's Guide)

sun java web server system fclose function