Transit in Shanghai Pudong airport

Hello
I'm from Denmark, and I'm going to the Philippines in January. On my way I'm going to make a short stop in SH, for 69 hours. So I should be able to do it without a visa. But does any of you know how I get this transit permit? I'm flying with Cathay pacific from Denmark to Shanghai, but from SH to Cebu with Philippine airlines.
And what if Philippine airlines suddenly changes my flight so may stay in SH ends up more 72 hours?