正則匹配備忘

(?:=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>

這段匹配結果是

分組後的結果是