477 

   478 /**

   479  * Modifies a string to remove all non ASCII characters and spaces.

   480  */

   481 function slugify($text)

   482 {

   483 	// replace non letter or digits by -

   484 	$text = preg_replace('~[^\\pL\d]+~u', '-', $text);

   485 

   486 	// trim

   487 	$text = trim($text, '-');

   488 

   489 	// transliterate

   490 	if (function_exists('iconv'))

   491 	{

   492 		$text = iconv('utf-8', 'us-ascii//TRANSLIT', $text);

   493 	}

   494 

   495 	// lowercase

   496 	$text = strtolower($text);

   497 

   498 	// remove unwanted characters

   499 	$text = preg_replace('~[^-\w]+~', '', $text);

   500 

   501 	if (empty($text))

   502 	{

   503 		return 'n-a';

   504 	}

   505 

   506 	return $text;

   507 }

   508 

   509 

   510 // from http://www.house6.com/blog/?p=83

   511 function sanitize_filename($f) {

   512 	// a combination of various methods

   513 	// we don't want to convert html entities, or do any url encoding

   514 	// we want to retain the "essence" of the original file name, if possible

   515 	// char replace table found at:

   516 	// http://www.php.net/manual/en/function.strtr.php#98669

   517 	$replace_chars = array(

   518 			'Š'=>'S', 'š'=>'s', 'Ð'=>'Dj','Ž'=>'Z', 'ž'=>'z', 'À'=>'A', 'Á'=>'A', 'Â'=>'A', 'Ã'=>'A', 'Ä'=>'A',

   519 			'Å'=>'A', 'Æ'=>'A', 'Ç'=>'C', 'È'=>'E', 'É'=>'E', 'Ê'=>'E', 'Ë'=>'E', 'Ì'=>'I', 'Í'=>'I', 'Î'=>'I',

   520 			'Ï'=>'I', 'Ñ'=>'N', 'Ò'=>'O', 'Ó'=>'O', 'Ô'=>'O', 'Õ'=>'O', 'Ö'=>'O', 'Ø'=>'O', 'Ù'=>'U', 'Ú'=>'U',

   521 			'Û'=>'U', 'Ü'=>'U', 'Ý'=>'Y', 'Þ'=>'B', 'ß'=>'Ss','à'=>'a', 'á'=>'a', 'â'=>'a', 'ã'=>'a', 'ä'=>'a',

   522 			'å'=>'a', 'æ'=>'a', 'ç'=>'c', 'è'=>'e', 'é'=>'e', 'ê'=>'e', 'ë'=>'e', 'ì'=>'i', 'í'=>'i', 'î'=>'i',

   523 			'ï'=>'i', 'ð'=>'o', 'ñ'=>'n', 'ò'=>'o', 'ó'=>'o', 'ô'=>'o', 'õ'=>'o', 'ö'=>'o', 'ø'=>'o', 'ù'=>'u',

   524 			'ú'=>'u', 'û'=>'u', 'ý'=>'y', 'ý'=>'y', 'þ'=>'b', 'ÿ'=>'y', 'ƒ'=>'f'

   525 	);

   526 	$f = strtr($f, $replace_chars);

   527 	// convert & to "and", @ to "at", and # to "number"

   528 	$f = preg_replace(array('/[\&]/', '/[\@]/', '/[\#]/'), array('-and-', '-at-', '-number-'), $f);

   529 	$f = preg_replace('/[^(\x20-\x7F)]*/','', $f); // removes any special chars we missed

   530 	$f = str_replace(' ', '-', $f); // convert space to hyphen

   531 	$f = str_replace('\'', '', $f); // removes apostrophes

   532 	$f = preg_replace('/[^\w\-\.]+/', '', $f); // remove non-word chars (leaving hyphens and periods)

   533 	$f = preg_replace('/[\-]+/', '-', $f); // converts groups of hyphens into one

   534 	if (function_exists('iconv'))

   535 	{

   536 		$f = iconv('utf-8', 'us-ascii//TRANSLIT', $f);

   537 	}

   538 	

   539 	return strtolower($f);

   540 }