我目前正在学习PHP,而我正在尝试做的是使用HTML下拉列表为用户选择排名。
insert.php:
<?php
$tUsers_Select = "SELECT * FROM users LEFT JOIN ranks ON ranks.rankName = users.rank";
$tRanks_Select = "SELECT * FROM ranks";
$tUsers_Select_Query = mysql_query($tUsers_Select);
$tRanks_Select_Query = mysql_query($tRanks_Select);
?>
<form action="insertData.php" method="post">
<select name="ranks">
<option value="0" selected="selected">Select rank</option>
<?php
while ($ranks_item = mysql_fetch_array($tRanks_Select_Query, MYSQL_ASSOC)) {
$rankID = $ranks_item['rankID'];
$value = $ranks_item['value'];
$rankName = $ranks_item['rankName'];
$rankOrder = $ranks_item['rankOrder'];
echo '<option value="'.$rankOrder.'" name="'.$value.'">'.$rankName.'</option>';
}
while ($users_item = mysql_fetch_array($tUsers_Select_Query, MYSQL_ASSOC)) {
$ID = $users_item['ID'];
$rank = $users_item['rank'];
$username = $users_item['username'];
$email = $users_item['email'];
$password = $users_item['password'];
}
?>
</select>
<input type="hidden" name="rankID">
<input type="hidden" name="ID">
<input type="text" name="username">
<input type="email" name="email">
<input type="password" name="password">
<button type="submit">Submit</button>
</form>
insertData.php:
<?php
$rank = $_POST['rank'];
$username = $_POST['username'];
$email = $_POST['email'];
$password = $_POST['password'];
$insertUser = "INSERT INTO users (";
$insertUser .= "rank, ";
$insertUser .= "username, ";
$insertUser .= "email, ";
$insertUser .= "password) ";
$insertUser .= "VALUES (";
$insertUser .= "'".$rank."', ";
$insertUser .= "'".$username."', ";
$insertUser .= "'".$email."', ";
$insertUser .= "'".$password."')";
echo "<br />".$insertUser;
if (!isset($rank)) {
echo "Rank is not set";
echo '<br /><a href="insert.php">Go back</a><br />';
} else {
echo "Rank is set";
mysql_query($insertUser);
}
?>
当我运行此代码时,收到一条错误消息:
注意:未定义的索引等级
用户数据库表:
ID | rank | username | email | password
排名数据库表:
rankID | value | rankName | rankOrder
-------------------------------------
1 | rank | Manager | 3
2 | rank | Admin | 2
1 | rank | Editor | 1
如果您需要更多详情,请发表评论。
答案 0 :(得分:0)
您的<select>
代码名称为<select name="ranks">
,而您发布的内容为$rank = $_POST['rank'];
,应为$rank = $_POST['ranks'];