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How to correct this error in php?

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Release： 2016-10-11 14:23:42
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How to correct this error in php?
Can’t I write like this:

How to correct this error in php?

Reply content:

How to correct this error in php?
Can’t I write like this:

How to correct this error in php?

It’s okay to write like this, I’m not sure what your lines 32 and 46 are

It should be User:db and internally it is self:db

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