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Get file extension function

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2016-07-25 09:09:291090browse
Usage: echo FileExtension("name.txt"); get txt
  1. function FileExtension($fstr){
  2. $retval = '';
  3. $pt = strrpos($fstr, ".");
  4. if ($pt) $retval = substr($fstr, $pt+1 , strlen($fstr) - $pt);
  5. return ($retval);
  6. }
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