Php 有人知道我的脚本是怎么做的吗？ // Create a GMap2 instance var gmap = new GMap2( document.getElementById( 'map' ); // Do all your setup here, l

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有人知道我的脚本是怎么做的吗？

// Create a GMap2 instance
var gmap = new GMap2( document.getElementById( 'map' );

// Do all your setup here, like gmap.setCenter() and such

// Now, load the map data
loadMapFromCurrentBounds( gmap );

// Assign a handler to the "moveend" event
GEvent.addListener( gmap, 'moveend', function()
{
  loadMapFromCurrentBounds( gmap );
});

function loadMapFromCurrentBounds( gmap )
{
  // First, determine the map bounds
  var bounds = gmap.getBounds();

  // Then the points
  var swPoint = bounds.getSouthWest();
  var nePoint = bounds.getNorthEast();

  // Now, each individual coordinate
  var swLat = swPoint.lat();
  var swLng = swPoint.lng();
  var neLat = nePoint.lat();
  var neLng = nePoint.lng();

  // Now, build a query-string to represent this data
  var qs = 'swLat=' + swLat + '&swLng=' + swLng + '&neLat=' + neLat + '&neLng=' + neLng;

  // Now you can use this query-string in your AJAX request  

  // AJAX-stuff here
}

$swLat = mysql_real_escape_string( $_GET['swLat'] );
$swLng = mysql_real_escape_string( $_GET['swLng'] );
$neLat = mysql_real_escape_string( $_GET['neLat'] );
$neLng = mysql_real_escape_string( $_GET['neLng'] );

$query = "
SELECT *
  FROM [Table]
 WHERE lat > $swLat
   AND lat < $neLat
   AND lng > $swLng
   AND lng < $neLng
";