While filtering URL information within tweet, function with regular expression to find and replace it is needed. The remove_URL() function below could do exactly what I want to do:)
PHP function for removing URLs in string:
1: <?php
2: $string = "100% 준비되면 하겠다는 것은 하늘나라 가서 시작하겠다는 겁니다..http://t.co/S2sTmdF45o";
3: echo remove_URL($string);
4: function remove_URL($html){
5: return $result = preg_replace(
6: '%\b(([\w-]+://?|www[.])[^\s()<>]+(?:\([\w\d]+\)|([^[:punct:]\s]|/)))%s',
7: '',
8: $html
9: );
10: }
11: ?>