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  1. <?php
  2. /*
  3. * PHP class for converting Mercator X, Y and Z
  4. * coordinates to Bing Maps Quad tree key
  5. * Ported from C# code from MSDN
  6. * http://msdn.microsoft.com/en-us/library/bb259689.aspx
  7. *
  8. * Usage:
  9. * mercatorQuadkey(z, x, y)
  10. * Example:
  11. * mercatorQuadkey(15, 5240, 12661)
  12. */
  13. function mercatorQuadkey($tileX, $tileY, $levelOfDetail){
  14.     for ($i = $levelOfDetail; $i > 0; $i--)
  15.     {
  16.         $digit = '0';
  17.         $mask = 1 << ($i - 1);
  18.         if (($tileX & $mask) !== 0)
  19.         {
  20.             $digit++;
  21.         }
  22.         if (($tileY & $mask) !== 0)
  23.         {
  24.             $digit++;
  25.             $digit++;
  26.         }
  27.         $quadkey = $quadkey.$digit;
  28.     }
  29.     return $quadkey;
  30. }
  31.  
  32. echo mercatorQuadkey(15, 5240, 12661);
  33. ?>
Success #stdin #stdout 0.04s 13064KB
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https://ideone.com/oOydCg
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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