通过mysql_query错误的变量帖子

Question

I have a table gquestions with columns id,answer,date. I'm trying to update string in table with this HTML form and PHP queries:

HTML

<form action="/reply" method="post">
    <textarea name="answer"></textarea><br>
    <input type="submit" value="Reply">
</form>

PHP

$p_answer = $_POST["answer"];
$time = time();
mysql_query("UPDATE gquestions SET answer='$p_answer' AND date='$time' WHERE id='1'");
echo "UPDATE gquestions SET answer='$p_answer' AND date='$time' WHERE id='1'";

Okay, in form I'm typing in textarea Test and clicking Reply and get this result in page:

UPDATE gquestions SET answer='Test' AND date='1490982467' id='1'

but in table I get 0 instead of Test in answer column. Why I'm getting 0 in my column?

Answer 1

Change

UPDATE gquestions SET answer='$p_answer' AND date='$time' WHERE id='1'

To

UPDATE gquestions SET answer='$p_answer', date='$time' WHERE id='1'