wp-admin/includes/class-ftp-sockets.php:238 function _quit() { if($this->_connected) { @socket_close($this->_ftp_control_sock); $this->_connected=false; $this->SendMSG("Socket closed"); } }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-ftp-sockets.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.