I have an Codeigniter app (using version 2.1.0) that is writing a transaction to a mysql database. I'm fairly sure that I've got a foreign key constraint error occurring, but I can find no way to make CI tell me the specific error. mysql_error() comes back empty.I have an Codeigniter app (using version 2.1.0)
阅读背景：
在Codeigniter下，是否可能看到mysql_error()?
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