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Ask related questions all day. I still keep learning-php Tutorial

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Author: User
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Ask questions all day. I still keep scoring. when I click "add voice" in the upper left corner, he will jump to the "voice" page of the students. Then, it is added successfully. Then, I jumped to the student's voice page and came out with an empty data. What is this? Share To: ask questions all day long. I still have points


When I click "add voice" in the upper left corner, it will jump to the student voice page. Then, it is added successfully. Then, I jumped to the student's voice page and came out with an empty data. What is this?

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------ Solution --------------------
What is displayed, not all written by yourself?
------ Solution --------------------
Either the data type conversion problem or the value is not passed.

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