Dark Launch

This is a Dark Launch.

Wine fails with "X Error of failed request: XF86VidModeExtensionDisabled"; UseXVidMode

The error:
Code
 
X Error of failed request:  XF86VidModeExtensionDisabled
  Major opcode of failed request:  129 (XFree86-VidModeExtension)
  Minor opcode of failed request:  6 (XF86VidModeGetAllModeLines)
  Serial number of failed request:  88
  Current serial number in output stream:  88
 

To fix, add "UseXVidMode" key to ~/.wine/user.reg
Code
 
cat >>"$HOME/.wine/user.reg" <<EOF
 
[Software\\\\Wine\\\\X11 Driver] 1269299093
"UseXVidMode"="N"
EOF

Wine should now load.

PHP WhoAmI; whoami www-data using exec()

PHP scripts typically runs under the www-data user. Verify this using the following code:
PHP
 
<?php
$command = 'whoami';
echo exec($command) . "\n";

HTTP Status Codes in PHP; http header response code function

Output your desired HTTP status code using the status code and the header() function.
PHP
 
<?php
function HTTPStatus($num) {
    $http = array(
        100 => 'HTTP/1.1 100 Continue',
        101 => 'HTTP/1.1 101 Switching Protocols',
        200 => 'HTTP/1.1 200 OK',
        201 => 'HTTP/1.1 201 Created',
        202 => 'HTTP/1.1 202 Accepted',
        203 => 'HTTP/1.1 203 Non-Authoritative Information',
        204 => 'HTTP/1.1 204 No Content',
        205 => 'HTTP/1.1 205 Reset Content',
        206 => 'HTTP/1.1 206 Partial Content',
        300 => 'HTTP/1.1 300 Multiple Choices',
        301 => 'HTTP/1.1 301 Moved Permanently',
        302 => 'HTTP/1.1 302 Found',
        303 => 'HTTP/1.1 303 See Other',
        304 => 'HTTP/1.1 304 Not Modified',
        305 => 'HTTP/1.1 305 Use Proxy',
        307 => 'HTTP/1.1 307 Temporary Redirect',
        400 => 'HTTP/1.1 400 Bad Request',
        401 => 'HTTP/1.1 401 Unauthorized',
        402 => 'HTTP/1.1 402 Payment Required',
        403 => 'HTTP/1.1 403 Forbidden',
        404 => 'HTTP/1.1 404 Not Found',
        405 => 'HTTP/1.1 405 Method Not Allowed',
        406 => 'HTTP/1.1 406 Not Acceptable',
        407 => 'HTTP/1.1 407 Proxy Authentication Required',
        408 => 'HTTP/1.1 408 Request Time-out',
        409 => 'HTTP/1.1 409 Conflict',
        410 => 'HTTP/1.1 410 Gone',
        411 => 'HTTP/1.1 411 Length Required',
        412 => 'HTTP/1.1 412 Precondition Failed',
        413 => 'HTTP/1.1 413 Request Entity Too Large',
        414 => 'HTTP/1.1 414 Request-URI Too Large',
        415 => 'HTTP/1.1 415 Unsupported Media Type',
        416 => 'HTTP/1.1 416 Requested Range Not Satisfiable',
        417 => 'HTTP/1.1 417 Expectation Failed',
        500 => 'HTTP/1.1 500 Internal Server Error',
        501 => 'HTTP/1.1 501 Not Implemented',
        502 => 'HTTP/1.1 502 Bad Gateway',
        503 => 'HTTP/1.1 503 Service Unavailable',
        504 => 'HTTP/1.1 504 Gateway Time-out',
        505 => 'HTTP/1.1 505 HTTP Version Not Supported',
    );
 
    header($http[$num]);
 
    return
        array(
            'code' => $num,
            'error' => $http[$num],
        );
}