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我有一组三个单选按钮,我需要预先选择用户是否已经提交(即每个用户只有1条记录)。我使用我知道正常工作的查询设置了三个变量,但单选按钮中的代码无法识别它们。任何帮助或指导,非常感谢。这里是PHP代码:通过查询未被识别设置的变量
$query = "SELECT * ";
$query .= "FROM mypicks ";
$query .= "WHERE user_id = {$user_id} ";
$result = mysqli_query($connection, $query);
if ($result->num_rows === 1) {
$anthem1 = mysqli_query($connection, "SELECT anthem1 FROM mypicks WHERE user_id = '$user_id'");
$cointoss2 = mysqli_query($connection, "SELECT cointoss2 FROM mypicks WHERE user_id = '$user_id'");
$firstscore3 = mysqli_query($connection, "SELECT firstscore3 FROM mypicks WHERE user_id = '$user_id'");
if (isset($_POST['submit'])) {
if (isset($_POST['anthem1'])) {
$anthem1 = $_POST['anthem1'];
}
if (isset($_POST['cointoss2'])) {
$cointoss2 = $_POST['cointoss2'];
}
if (isset($_POST['firstscore3'])) {
$firstscore3 = $_POST['firstscore3'];
}
$query = "UPDATE mypicks SET ";
$query .= "anthem1 = '{$anthem1}', ";
$query .= "cointoss2 = '{$cointoss2}', ";
$query .= "firstscore3 = '{$firstscore3}' ";
$query .= "WHERE user_id = {$user_id} ";
$result = mysqli_query($connection, $query);
}
}
,这里是单选按钮代码:
<form action="Game1_MyPicks.php" method="post">
Will the National Anthem be over 3 mins and 15 secs? <br />
Over <input type="radio" name="anthem1" value="Over" <?php if ($anthem1=="Over") print('checked="checked"') ?>/><br />
Under <input type="radio" name="anthem1" value="Under" <?php if ($anthem1=="Under") print('checked="checked"') ?>/><br />
<br />
<br />
<br />
Which team will win the coin toss? <br />
Ravens <input type="radio" name="cointoss2" value="Ravens" <?php if ($cointoss2=="Ravens") print('checked="checked"') ?>/><br />
Niners <input type="radio" name="cointoss2" value="Niners" <?php if ($cointoss2=="Niners") print('checked="checked"') ?> /><br />
<br />
<br />
<br />
Will the first score of the game be a FG? <br />
Yes <input type="radio" name="firstscore3" value="Yes" <?php if ($firstscore3=="Yes") print('checked="checked"') ?>/><br />
No <input type="radio" name="firstscore3" value="No" <?php if ($firstscore3=="No") print('checked="checked"') ?> /><br />
<input class="button-md" type="submit" name="submit" value="Save">
</form>
Mawia,当我使用它的代码,我得到了一个“未定义变量错误”为$水库当我到达即使用户创造了一个记录形式。任何想法为什么$ res是未定义的? – user3367183