source: Base/Types/GPS.php

<?php

include_once(dirname(__FILE__).'/Base.php');

class TypeGPS extends TypeBase
{
  function OnView($Item)
  {
    global $Database;

    $DbResult = $Database->query('SELECT * FROM `SystemGPS` WHERE `Id`='.$Item['Value']);
    if($DbResult->num_rows > 0)
    {
      $DbRow = $DbResult->fetch_assoc();
      $Longitude = $this->Explode($DbRow['Longitude']);
      $Latitude = $this->Explode($DbRow['Latitude']);
      $Output = '<a href="http://www.mapy.cz/?st=search&fr=loc:'.$DbRow['Latitude'].' '.$DbRow['Longitude'].'">'.$Latitude[0].'°'.$Latitude[1]."'".$Latitude[2].'" '.$Longitude[0].'°'.$Longitude[1]."'".$Longitude[2].'"</a>';
    }
    return($Output);
  }

  function OnEdit($Item)
  {
    global $Database;

    if($Item['Value'] != '')
    {
      $DbResult = $Database->query('SELECT * FROM `SystemGPS` WHERE `Id`='.$Item['Value']);
      if($DbResult->num_rows > 0)
      {
        $DbRow = $DbResult->fetch_assoc();
      } else $DbRow = array('Longitude' => 0, 'Latitude' => 0);
    } else $DbRow = array('Longitude' => 0, 'Latitude' => 0);
    $Value = $this->Explode($DbRow['Latitude']);
    $Output = '<input type="text" size="3" name="'.$Item['Name'].'-lat-deg" value="'.$Value[0].'"/>°';
    $Output .= '<input type="text" size="3" name="'.$Item['Name'].'-lat-min" value="'.$Value[1].'"/>\'';
    $Output .= '<input type="text" size="3" name="'.$Item['Name'].'-lat-sec" value="'.$Value[2].'"/>"<br />';
    $Value = $this->Explode($DbRow['Longitude']);
    $Output .= '<input type="text" size="3" name="'.$Item['Name'].'-lon-deg" value="'.$Value[0].'"/>°';
    $Output .= '<input type="text" size="3" name="'.$Item['Name'].'-lon-min" value="'.$Value[1].'"/>\'';
    $Output .= '<input type="text" size="3" name="'.$Item['Name'].'-lon-sec" value="'.$Value[2].'"/>"';
    return($Output);
  }

  function OnLoad($Item)
  {
    global $Database;

    $Latitude = $this->Implode($_POST[$Item['Name'].'-lat-deg'], $_POST[$Item['Name'].'-lat-min'], $_POST[$Item['Name'].'-lat-sec']);
    $Longitude = $this->Implode($_POST[$Item['Name'].'-lon-deg'], $_POST[$Item['Name'].'-lon-min'], $_POST[$Item['Name'].'-lon-sec']);
    $Database->query('INSERT INTO SystemGPS (`Latitude`, `Longitude`) VALUES ("'.$Latitude.'", "'.$Longitude.'")');
    return($Database->insert_id);
  }

  function Explode($Float)
  {
    $Degrees = intval($Float);
    $Float = abs($Float);
    $Float = ($Float - intval($Float)) * 60;
    $Minutes = intval($Float);
    $Float = ($Float - intval($Float)) * 60;
    $Seconds = round($Float, 3);
    return(array($Degrees, $Minutes, $Seconds));
  }

  function Implode($Degrees, $Minutes, $Seconds)
  {
    if($Degrees < 0) return(-(abs($Degrees) + ($Minutes + $Seconds / 60) / 60));
    else return($Degrees + ($Minutes + $Seconds / 60) / 60);
  }
}

?>