/**
* 产生随机字符串
*
* 产生一个指定长度的随机字符串,并返回给用户
*
* @access public
* @param int $len 产生字符串的位数
* @return string
*/
function randstr($len=6) {
$chars='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-@#~'; // characters to build the password from
mt_srand((double)microtime()*1000000*getmypid()); // seed the random number generater (must be done)
$password='';
while(strlen($password)<$len)
$password.=substr($chars,(mt_rand()%strlen($chars)),1);
return $password;
}
/**
* 格式化用户评论
*
* @access public
* @param string
* @return void
*/
function clean_note($text) {
$text = htmlspecialchars(trim($text));
/* turn urls into links */
$text = preg_replace("/((mailto|http|ftp|nntp|news):.+?)(>|\s|\)|\"|\.\s|$)/","<a href=\"\1\">\1</a>\3",$text);
/* this 'fixing' code will go away eventually. */
$fixes = array('<br>', '<p>', '</p>');
reset($fixes);
while (list(,$f) = each($fixes)) {
$text = str_replace(htmlspecialchars($f), $f, $text);
$text = str_replace(htmlspecialchars(strtoupper($f)), $f, $text);
}
/* <p> tags make things look awfully weird (breaks things out of the <code>
tag). Just convert them to <br>'s
*/
$text = str_replace (array ('<P>', '<p>'), '<br>', $text);
/* Remove </p> tags to prevent it from showing up in the note */
$text = str_replace (array ('</P>', '</p>'), '', $text);