Payment: how can I use the php syntax in the dwt and lbi files of ecshop2.7.3?

I am in a hurry to ask ecshop2.7.3 how to use php syntax in dwt and lbi files for payment and ask ecshop2.7.3 how to use php syntax-yuan in dwt and lbi files. if you have changed it, contact me xxfaxy@qq.com ------ solution ------------------ ecshop payment ask ecshop2.7.3 how to use php syntax in dwt and lbi files
Payment advice how ecshop2.7.3 can use php syntax in dwt and lbi files

-Yuan, I am very anxious, if you have changed, contact me xxfaxy@qq.com

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Ecshop labels support php. you can find the information and test it several times.
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Isn't this normal? Both dwt and lbi support PHP