$str='中华人民共和国123456789abcdefg';echopreg_match("/^[u4e00-u9fa5_a-zA-Z0-9]{3,15}$",$strName);运行一下上面这段代码,看会有什么提示信息?Warning:preg_match():Compilationfailed:PCREdoesnotsupportL,l,N,P,p,U,u,orXatoffset3inF:http://http://www.zjjv.com///nokia/5800/online2原来,PHP正则表达式中不支持下列Perl转义序列:L,l,N,P,p,U,u,orX在UTF-8模式下,允许用“x{...}”,花括...