检查用户输入的ISBN号码(可以带也可以不带连字符号)是否合法。 源代码如下: <?php/** Check to see if the entered isbn is valid and return* true or false depending.* I'm not even going to try to claim copyright for such* a simple thing. Do what you will with it.* 8-) Keith Nunn, kapn@anglican.ca*/function checkisbn($isbn) {$isbn10 = ereg_replace("[^0-9X]&q...
[ 查看全文 ]