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Check if File Exists / Append Number to Name

/ Published in: PHP
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  1. If the file name exists, returns new file name with _number appended so you don't overwrite it.
  2.  
  3. function file_newname($path, $filename){
  4.     if ($pos = strrpos($filename, '.')) {
  5.            $name = substr($filename, 0, $pos);
  6.            $ext = substr($filename, $pos);
  7.     } else {
  8.            $name = $filename;
  9.     }
  10.  
  11.     $newpath = $path.'/'.$filename;
  12.     $newname = $filename;
  13.     $counter = 0;
  14.     while (file_exists($newpath)) {
  15.            $newname = $name .'_'. $counter . $ext;
  16.            $newpath = $path.'/'.$newname;
  17.            $counter++;
  18.      }
  19.  
  20.     return $newname;
  21. }
  22.  
  23.  
  24.  
  25. Example returns:
  26.  
  27. myfile.jpg
  28. myfile_0.jpg
  29. myfile_1.jpg

URL: http://css-tricks.com/snippets/php/check-if-file-exists-append-number-to-name/

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