socket_clear_error
(PHP 4 >= 4.2.0, PHP 5)
socket_clear_error — Clears the error on the socket or the last error code
Описание
void socket_clear_error
([ resource $socket
] )
This function clears the error code on the given socket or the global last socket error if no socket is specified.
This function allows explicitly resetting the error code value either of a socket or of the extension global last error code. This may be useful to detect within a part of the application if an error occurred or not.
Возвращаемые значения
Эта функция не возвращает значения после выполнения.
- socket_accept
- socket_bind
- socket_clear_error
- socket_close
- socket_cmsg_space
- socket_connect
- socket_create_listen
- socket_create_pair
- socket_create
- socket_get_option
- socket_getopt
- socket_getpeername
- socket_getsockname
- socket_import_stream
- socket_last_error
- socket_listen
- socket_read
- socket_recv
- socket_recvfrom
- socket_recvmsg
- socket_select
- socket_send
- socket_sendmsg
- socket_sendto
- socket_set_block
- socket_set_nonblock
- socket_set_option
- socket_setopt
- socket_shutdown
- socket_strerror
- socket_write
Коментарии
If you want to clear your error in a small amount of code, do a similar hack as to what most people do in SQL query checking,
<?php
$result = mysql_query($sql) or die(/* Whatever code */);
?>
It could look like this:
<?php
if (!($socket = socket_create(/* Whatever code */)) {
echo ("Failed to create socket: " . socket_strerror(socket_last_error()) and socket_clear_error());
}
?>
As you can see, I use "and" here instead of "or" since the first part will always return true, thus if you use or PHP's lazy boolean checking will not execute the last part, which it will with an and if the first part is true.
You can do this too, with anonymous function:<?php
$socket = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or function() {
$errstr = socket_strerror(socket_last_error());
echo ("Failed to create socket: " . $errstr);
socket_clear_error();
};
?>