register_shutdown_function(3) [php man page]
REGISTER_SHUTDOWN_FUNCTION(3) 1 REGISTER_SHUTDOWN_FUNCTION(3) register_shutdown_function - Register a function for execution on shutdown SYNOPSIS
void register_shutdown_function (callable $callback, [mixed $parameter], [mixed $...]) DESCRIPTION
Registers a $callback to be executed after script execution finishes or exit(3) is called. Multiple calls to register_shutdown_function(3) can be made, and each will be called in the same order as they were registered. If you call exit(3) within one registered shutdown function, processing will stop completely and no other registered shutdown functions will be called. PARAMETERS
o $callback - The shutdown callback to register. The shutdown callbacks are executed as the part of the request, so it's possible to send output from them and access output buffers. o $parameter - It is possible to pass parameters to the shutdown function by passing additional parameters. o $... - RETURN VALUES
No value is returned. ERRORS
/EXCEPTIONS If the passed callback is not callable a E_WARNING level error will be generated. EXAMPLES
Example #1 register_shutdown_function(3) example <?php function shutdown() { // This is our shutdown function, in // here we can do any last operations // before the script is complete. echo 'Script executed with success', PHP_EOL; } register_shutdown_function('shutdown'); ?> NOTES
Note Working directory of the script can change inside the shutdown function under some web servers, e.g. Apache. Note Shutdown functions will not be executed if the process is killed with a SIGTERM or SIGKILL signal. While you cannot intercept a SIGKILL, you can use pcntl_signal(3) to install a handler for a SIGTERM which uses exit(3) to end cleanly. SEE ALSO
auto_append_file, exit(3), The section on connection handling. PHP Documentation Group REGISTER_SHUTDOWN_FUNCTION(3)
Check Out this Related Man Page
shutdown(3XNET) X/Open Networking Services Library Functions shutdown(3XNET) NAME
shutdown - shut down socket send and receive operations SYNOPSIS
cc [ flag ... ] file ... -lxnet [ library ... ] #include <sys/socket.h> int shutdown(int socket, int how); DESCRIPTION
The shutdown() function disables subsequent send() and receive() operations on a socket, depending on the value of the how argument. PARAMETERS
how Specifies the type of shutdown. The values are as follows: SHUT_RD Disables further receive operations. SHUT_WR Disables further send operations. SHUT_RDWR Disables further send and receive operations. socket Specifies the file descriptor of the socket. RETURN VALUES
Upon successful completion, shutdown() returns 0. Otherwise, -1 is returned and errno is set to indicate the error. ERRORS
The shutdown() function will fail if: EBADF The socket argument is not a valid file descriptor. EINVAL The how argument is invalid. ENOTCONN The socket is not connected. ENOTSOCK The socket argument does not refer to a socket. The shutdown() function may fail if: ENOBUFS Insufficient resources were available in the system to perform the operation. ENOSR There were insufficient STREAMS resources available for the operation to complete. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
getsockopt(3XNET), recv(3XNET), recvfrom(3XNET), recvmsg(3XNET), select(3C), send(3XNET), sendto(3XNET), setsockopt(3XNET), socket(3XNET), attributes(5), standards(5) SunOS 5.11 10 Jun 2002 shutdown(3XNET)