自定义安全过滤

functionsafe_replace($string){$string=str_replace('%20','',$string);$string=str_replace('%27','',$string);$string=str_replace('%2527','',$string);$string=str_replace('*','',$string);$string=str_replace('"','"',$string);$string=str_replace("'",'',$string);$string=str_replace('"','',$string);$string=str_replace(';','',$string);$string=str_replace('<','<',$string);$string=str_replace('>','>',$string);$string=str_replace("{",'',$string);$string=str_replace('}','',$string);$string=str_replace('\\','',$string);return$string;}