note 102049 added to function.preg-replace

I have this code! ------------------------------------------------------------ <?php $amount = $_POST['amount']; // replace anything that's NOT 0-9 with "null" (nothing) $result=preg_replace('/[^0-9^A-Z^a-z-*&%$ ,;_!@.{}#]/', '<br/>', $amount); echo $result; ?> <form method="post" action=""> <input id="amount" name="amount" size="100" type="textbox" value="Driver,.;_-{}*&%$#[] Genius Professional Edition 10.0.0.526/Driver Genius Professional Edition 10.0.0.526.exe"> <input type="submit" value="Submit"> </form> ------------------------------------------------------------ Output ------------------------------------------------------------ Driver,.;_-{}*&%$# Genius Professional Edition 10.0.0.526 Driver Genius Professional Edition 10.0.0.526.exe ------------------------------------------------------------ The output i want ------------------------------------------------------------ Driver,.;_-{}*&%$#[] Genius Professional Edition 10.0.0.526 Driver Genius Professional Edition 10.0.0.526.exe ------------------------------------------------------------ Can someone help me with this! What i want is to add an exception for this []. But when i insert it directly into my code it did not work for me! Please help me with this! ---- Server IP: 69.147.83.197 Probable Submitter: 203.192.200.204 ---- Manual Page -- http://www.php.net/manual/en/function.preg-replace.php Edit -- https://master.php.net/note/edit/102049 Del: integrated -- https://master.php.net/note/delete/102049/integrated Del: useless -- https://master.php.net/note/delete/102049/useless Del: bad code -- https://master.php.net/note/delete/102049/bad+code Del: spam -- https://master.php.net/note/delete/102049/spam Del: non-english -- https://master.php.net/note/delete/102049/non-english Del: in docs -- https://master.php.net/note/delete/102049/in+docs Del: other reasons-- https://master.php.net/note/delete/102049 Reject -- https://master.php.net/note/reject/102049 Search -- https://master.php.net/manage/user-notes.php