正则匹配备忘 (?:=ky_thm>|kyt8>|kyt8ky_thm>)(?:<span>)?(d+)(?:</span>)?(?:</td>) <tr><tdclass=ky_thm>1000056</td><tdwidth=25class=kyt8>3</td><tdwidth=25class=kyt8>5</td> 这段匹配结果是 分组后的结果是