fsync

Function • Added in PHP 8.1

Synchronizes changes to the file (including meta-data).

PHP 5

PHP 7

PHP 8.0

Added

PHP 8.2-8.3

PHP 8.4

PHP 8.5

PHP 8.6

`fsync` Function synopsis

fsync($stream): bool

Parameters

`$stream`

Return value

Typebool

Returns true on success, false on failure

Changes to the `fsync` Function

PHP 8.1

Function added

`fsync` Function Availability

PHP Version	Availability
PHP 8.6Upcoming Release	Yes
PHP 8.5Supported (Latest)	Yes
PHP 8.4Supported	Yes
PHP 8.3Security-Fixes Only	Yes
PHP 8.2Security-Fixes Only	Yes
PHP 8.1Unsupported	Yes
PHP 8.0Unsupported	No
PHP 7.4Unsupported	No
PHP 7.3Unsupported	No
PHP 7.2Unsupported	No
PHP 7.1Unsupported	No
PHP 7.0Unsupported	No
PHP 5.6Unsupported	No
PHP 5.5Unsupported	No
PHP 5.4Unsupported	No
PHP 5.3Unsupported	No