socket_last_error

Returns the last error on the socket

&reftitle.description; `int` `socket_last_error` `resource` `socket`

If a socket resource is passed to this function, the last error which occurred on this particular socket is returned. If the socket resource is omitted, the error code of the last failed socket function is returned. The latter is particularly helpful for functions like `socket_create` which don't return a socket on failure and `socket_select` which can fail for reasons not directly tied to a particular socket. The error code is suitable to be fed to `socket_strerror` which returns a string describing the given error code.

&reftitle.parameters;

`socket`

- A valid socket resource created with `socket_create`.

&reftitle.returnvalues;

This function returns a socket error code.

&reftitle.examples;

### `socket_last_error` example

    <?php
    $socket = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP);

    if ($socket === false) {
        $errorcode = socket_last_error();
        $errormsg = socket_strerror($errorcode);

        die("Couldn't create socket: [$errorcode] $errormsg");
    }
    ?>

&reftitle.notes;

`socket_last_error` does not clear the error code, use `socket_clear_error` for this purpose.