求段php正则代码验证字符串
字符串规则:可以纯数字或纯字母 亦可二者结合,只能使用“-”不能使用汉字、其他字符符号并且字符串开头不能为“-”,结尾也不能为“-”
------解决方案--------------------
- PHP code
preg_match('/^[a-z0-9]+[a-z0-9-]*[a-z0-9]+$/i',$string); <br><font color="#e78608">------解决方案--------------------</font><br>我只管挑错,<br><br>1楼match不了一个字符的:)<br>2楼也是,\w还包含_, 楼主不要的 <br><font color="#e78608">------解决方案--------------------</font><br>1楼的正则稍微修改下,适应一个字符的情况:<br>
- PHP code
/^[a-z0-9]+[a-z0-9-]*[a-z0-9]+|[a-z0-9]+$/i <br><font color="#e78608">------解决方案--------------------</font><br>$str='\w+[0-9a-zA-Z\-]+\w$' <br><font color="#e78608">------解决方案--------------------</font><br>我也来凑个热闹<br>
- PHP code
/^[0-9a-z][-0-9a-z]*[0-9a-z]$/i <div class="clear"> </div>

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