Editing wp-config.php
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I am experiencing the Error establishing the database connection when attempting to log in to my admin page (and the website is not loading either). I have determined that I need to edit the wp-config.php file. I have located the file but cannot edit it (it pulls up in an internet explorer window) or if I get it open as text to edit I cannot save it.
Any suggestions?
Thanks!
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<phpcode>
<?php
/**
* FOV3D (Double Station 3D visualization)
* Class to create a KML file that contains a semi-transparent polygon for the Field Of View’s (FOV) of meteor cameras.
*
* Beware of bugs!!
*
* @author Geert Barentsen ((email visible only to moderators and staff))
* @version 2008-01-23
*
* Usage example:
* $ges = new GoogleEarthStation(100,true);
* $ges->addPlacemark(“Detlef”, 52.26339, 4.48933, 0, array(10,50,20,50,20,40,10,40), “8000ff00”);
* echo $ges->getKml();
**/// Angles are in decimal degrees!
// Station height is in meter, FOV range in kilometer!!class GoogleEarthStation {
/* CLASS VARIABLES */
// Field of view parameters are stored as separate variables
var $cut_horizontal;
var $cut_range;
var $placemarks = “”;/* PUBLIC FUNCTIONS */
/**
* Class constructor
* @param cut_range Range of the FOV polygon (km)
* @param cut_horizontal Cut top of FOV horizontally? (true/false)
**/
function GoogleEarthStation($cut_range, $cut_horizontal) {
$this->cut_horizontal = $cut_horizontal;
$this->cut_range = $cut_range;
}/**
* Get the KML file containing placemarks
**/
function getKml() {
$kml = “<?xml version=’1.0′ encoding=’UTF-8′?>”;
$kml .= “<kml xmlns=’http://earth.google.com/kml/2.1′>”;
$kml .= “<Folder>”;
$kml .= “<name>FOV3D</name>”;
$kml .= “<open>1</open>”;
$kml .= $this->placemarks;
$kml .= “</Folder>”;
$kml .= “</kml>”;
return $kml;
}/**
* Add a placemark for a single camera
* @param name Station name
* @param station_latitude Station latitude (decimal degrees)
* @param station_longitude Station longitude (decimal degrees)
* @param station_height Station altitude (decimal degrees)
* @param fov_corners Text field with comma-separated azimuth,elevation values for the fov corners
* @param color Polygon color and transparency html-code (8 characters, e.g. FF0000FF)
**/
function addPlacemark($name, $station_latitude, $station_longitude, $station_height, $corner_array, $color = “8000ff00”) {
// Convert (azimuth,elevation) for the FOV corner points to cartesian lat/lon/height values
$cartesian_corner_array = array();
if ( count($corner_array) % 2 == 0 ) {
for ($i=0; $i<count($corner_array); $i=$i+2) {
$cartesian_corner_array[] = $this->spherical2cartesian($station_latitude, $station_longitude, $station_height, $corner_array[$i], $corner_array[$i+1], $this->cut_range, $this->cut_horizontal);
}
}// Create a description for the KML file (to document the contents)
$description .= “Range: “.$this->cut_range.” kmn”;
$description .= “FOV (az,alt,az,alt …): (“.implode($corner_array, “, “).”)n”;
$description .= “Longitude: “. $station_longitude.” degn”;
$description .= “Latitude: “.$station_latitude.” degn”;
$description .= “Altitude: “.$station_height.” mnn”;// Create the final KML file
$result = “<Placemark id=’$name’>
<Style id=’camera’>
<LineStyle>
<width>1.5</width>
</LineStyle>
<PolyStyle>
<color>$color</color>
</PolyStyle>
</Style>
#camera <name>$name</name>
<description>$description</description><MultiGeometry>”;
$station = array($station_longitude, $station_latitude, $station_height);
// Run over FOV corner points and add relevant polygons
for ($i=0; $i<count($cartesian_corner_array); $i++) {
$i2 = $i+1;
if ($i2 == count($cartesian_corner_array)) {
$i2 = 0;
}
$result .= $this->getPolygon( array($station, $cartesian_corner_array[$i], $cartesian_corner_array[$i2]) );
}
// Add the top polygon
$result .= $this->getPolygon( $cartesian_corner_array );$result .= ” </MultiGeometry>
</Placemark>”;
$this->placemarks .= $result;
}/* PRIVATE FUNCTIONS */
/**
* Construct a KML polygon from an array of points
* @param $point_array Array of arrays containing lon/lat/height values
**/
function getPolygon($point_array) {
// Open the KML Polygon element
$result = “<Polygon>n”;
$result .= ” <extrude>0</extrude>n”;
$result .= ” <altitudeMode>absolute</altitudeMode>n”;
$result .= ” <outerBoundaryIs>n”;
$result .= ” <LinearRing>n”;
$result .= ” <coordinates>n”;// Add the coordinates for all points
foreach ($point_array as $point) {
$result .= ” “.$point[0].”,”.$point[1].”,”.$point[2].”n”;
}// The first point must be repeated to close the polygon
$result .= ” “.$point_array[0][0].”,”.$point_array[0][1].”,”.$point_array[0][2].”n”;// Close the Polygon element
$result .= ” </coordinates>n”;
$result .= ” </LinearRing>n”;
$result .= ” </outerBoundaryIs>n”;
$result .= “</Polygon>n”;
return $result;
}/**
* Convert azimuth and elevation to lon/lat/height values.
* This function uses spherical-to-cartesian coordinate transformations.
**/
function spherical2cartesian($station_latitude, $station_longitude, $station_height, $az, $ev, $cut_range, $cut_horizontal) {// Calculate range (distance between station and FOV corner point) in meter
if ($cut_horizontal) {
// Horizontal cut: fixed altitude (+ convert to meter: *1000)
if ($ev < 0.5) {
$range = 1000 * $cut_range / sin(deg2rad(0.5));
} else {
$range = 1000 * $cut_range / sin(deg2rad($ev));
}
} else {
// No horizontal cut: fixed range (+ convert to meter: *1000)
$range = 1000 * $cut_range;
}/* LATITUDE */
// Distance of the corner point from the station, expressed in earth degrees (+-111km per degree for spherical earth)
$fov_distance = ($range / 111000);
// Project the spherical coordinates to latitude using spherical-to-cartesian transformation
$delta_lat = $fov_distance * sin(deg2rad(90-$ev)) * cos(deg2rad($az));
$latitude = ($station_latitude + $delta_lat);/* LONGITUDE */
// Distance of the corner point from the station, expressed in earth degrees (+-111km per degree for spherical earth)
$fov_distance = ($range / 111000);
// Project the spherical coordinates to longitude using spherical-to-cartesian transformation
$delta_lon = $fov_distance * sin(deg2rad(90-$ev)) * sin(deg2rad($az));
// Note: we must divide delta_lon by the cosine of the altitude! (Longitudes get shorter towards the poles.)
$longitude = ($station_longitude + ($delta_lon / cos(deg2rad($latitude))) );/* HEIGHT */
$delta_height = $range * cos(deg2rad(90-$ev));
// Correct for the height for the curvature of the earth
if ($cut_horizontal == false) {
// First calculate the angle between the station and the FOV corner point (Pythagoras)
$dist_angle = sqrt($delta_lon*$delta_lon + $delta_lat*$delta_lat);
// Calculate the altitude difference caused by the earth curvature (if the earth was a sphere)
$radius_earth = 6372797;
$curv_corr = $radius_earth * (1-cos(deg2rad($dist_angle)));
// Add this altitude difference to delta_alt
$delta_height = $delta_height + $curv_corr;
}
// Calculate final absolute altitude
$height = ($station_height + $delta_height);/* RETURN THE RESULT */
$result = array();
$result[0] = $longitude;
$result[1] = $latitude;
$result[2] = $height;
return $result;
}}
?>
</phpcode>
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