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restrict detection of lat/lon pairs

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Only interpret numbers as geo coordinates if they are in the
actual range for latitude and longitude.
This commit is contained in:
Sarah Hoffmann 2012-03-04 14:50:26 +01:00
parent fec4c3c301
commit fa3fe7d056
1 changed files with 24 additions and 9 deletions
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33
website/search.php
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@ -181,21 +181,36 @@
// Do we have anything that looks like a lat/lon pair?
if (preg_match('/\\b([NS])[ ]+([0-9]+[0-9.]*)[ ]+([0-9.]+)?[, ]+([EW])[ ]+([0-9]+)[ ]+([0-9]+[0-9.]*)?\\b/', $sQuery, $aData))
{
$_GET['nearlat'] = ($aData[1]=='N'?1:-1) * ($aData[2] + $aData[3]/60);
$_GET['nearlon'] = ($aData[4]=='E'?1:-1) * ($aData[5] + $aData[6]/60);
$sQuery = trim(str_replace($aData[0], ' ', $sQuery));
$fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2] + $aData[3]/60);
$fQueryLon = ($aData[4]=='E'?1:-1) * ($aData[5] + $aData[6]/60);
if ($fQueryLat <= 90.1 && $fQueryLat >= -90.1 && $fQueryLon <= 180.1 && $fQueryLon >= -180.1)
{
$_GET['nearlat'] = $fQueryLat;
$_GET['nearlon'] = $fQueryLon;
$sQuery = trim(str_replace($aData[0], ' ', $sQuery));
}
}
elseif (preg_match('/\\b([0-9]+)[ ]+([0-9]+[0-9.]*)?[ ]+([NS])[, ]+([0-9]+)[ ]+([0-9]+[0-9.]*)?[ ]+([EW])\\b/', $sQuery, $aData))
{
$_GET['nearlat'] = ($aData[3]=='N'?1:-1) * ($aData[1] + $aData[2]/60);
$_GET['nearlon'] = ($aData[6]=='E'?1:-1) * ($aData[4] + $aData[5]/60);
$sQuery = trim(str_replace($aData[0], ' ', $sQuery));
$fQueryLat = ($aData[3]=='N'?1:-1) * ($aData[1] + $aData[2]/60);
$fQueryLon = ($aData[6]=='E'?1:-1) * ($aData[4] + $aData[5]/60);
if ($fQueryLat <= 90.1 && $fQueryLat >= -90.1 && $fQueryLon <= 180.1 && $fQueryLon >= -180.1)
{
$_GET['nearlat'] = $fQueryLat;
$_GET['nearlon'] = $fQueryLon;
$sQuery = trim(str_replace($aData[0], ' ', $sQuery));
}
}
elseif (preg_match('/(\\[|^|\\b)(-?[0-9]+[0-9.]*)[, ]+(-?[0-9]+[0-9.]*)(\\]|$|\\b)/', $sQuery, $aData))
{
$_GET['nearlat'] = $aData[2];
$_GET['nearlon'] = $aData[3];
$sQuery = trim(str_replace($aData[0], ' ', $sQuery));
$fQueryLat = $aData[2];
$fQueryLon = $aData[3];
if ($fQueryLat <= 90.1 && $fQueryLat >= -90.1 && $fQueryLon <= 180.1 && $fQueryLon >= -180.1)
{
$_GET['nearlat'] = $fQueryLat;
$_GET['nearlon'] = $fQueryLon;
$sQuery = trim(str_replace($aData[0], ' ', $sQuery));
}
}
if ($sQuery)