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A php custom function to get the file extension

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Release： 2016-07-25 09:00:45
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  3. /*

  4. Get the file extension
  5. Usage: GetFiletype($filename)
  6. */

  7. function GetFiletype($Filename) {

  8. if (substr_count($Filename, ".") == 0) { // Check whether there is a . number in the file name.
  9. return; // Return empty
  10. } else if (substr($Filename, -1) == ".") { // Check if it ends with ., that is, no extension
  11. return; // Return empty
  12. } else {
  13. $FileType = strrchr ($Filename, "."); // Cut from . number
  14. $FileType = substr($FileType, 1); // Remove . number
  15. return $FileType; // Return
  16. }
  17. }

  18. $Filename = "index.php";

  19. $Filename = GetFileType($Filename);
  20. echo $Filename; // Print out php

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一个获取文件扩展名的php自定义函数
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