How To Make Url Search Engine Friendly Making Urls Clean SEO

function clean_url($text)
{
#### FUNCTION BY WWW.WEBUNE.COM AND WALLPAPERAMA.COM
## PLEASE DO NOT REMOVE THIS.. THANK YOU

$text=strtolower($text);
$code_entities_match = array( '&quot;' ,'!' ,'@' ,'#' ,'$' ,'%' ,'^' ,'&' ,'*' ,'(' ,')' ,'+' ,'{' ,'}' ,'|' ,':' ,'"' ,'<' ,'>' ,'?' ,'[' ,']' ,'' ,';' ,"'" ,',' ,'.' ,'_' ,'/' ,'*' ,'+' ,'~' ,'`' ,'=' ,' ' ,'---' ,'--','--');
$code_entities_replace = array('' ,'-' ,'-' ,'' ,'' ,'' ,'-' ,'-' ,'' ,'' ,'' ,'' ,'' ,'' ,'' ,'-' ,'' ,'' ,'' ,'' ,'' ,'' ,'' ,'' ,'' ,'-' ,'' ,'-' ,'-' ,'' ,'' ,'' ,'' ,'' ,'-' ,'-' ,'-','-');
$text = str_replace($code_entities_match, $code_entities_replace, $text);
return $text;
}