如何在MySQL表中包含“ @”或“。”之类的字符？

$password = $_POST[\'password\'];
$username = $_POST[\'username\'];

$quoted_pass = mysql_real_escape_string($password);
$quoted_user = mysql_real_escape_string($username);

$sql = \"INSERT INTO users (username, password) VALUES (\'$quoted_pass\', \'$quoted_user\');
$result = mysql_query($sql) or die(mysql_error());

if (mysql_affected_rows($result) != 1) {
   die(\"User record not created\");
}