function makeClickableLinks($text) {  
 $text = preg_replace('/(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)/i',  
 '1', $text);  
 $text = preg_replace('/([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)/i',  
 '12', $text);  
 $text = preg_replace('/([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})/i',  
 '1', $text);  
  
return $text;  
}