这真的很奇怪，我不知道为什么会这样。我的其他文件工作正常（登录，注册和memberadd）但是，在memberaddprocess文件中，当它尝试连接到数据库时，它说我的数据库不存在。另一个工作正常，只有memberadd过程。如果有人知道原因，请解释一下。
这是我的memberadd.php代码
<?php
session_start();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/chtml-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en" >
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta name="description" content="Web Programming :: Assignment 2" />
<meta name="Keywords" content="Web, programming" />
<title>Member Login</title>
</head>
<body>
<h1>My Member System</h1>
</body>
</html>
<?php
require_once('sqlconnect.inc.php');
if(isset($_SESSION['membername'] ))
{
echo "".$_SESSION['membername']."<p>Add Member Page</p>";
$conn = @mysqli_connect($host,
$user,
$pswd,
$dbnm);
if (!$conn) {
echo "<p>Database connection failure</p>";
} else {
@mysqli_select_db($conn, $dbnm)
or die ("Database not available");
}
$memberHid = $_SESSION['membername'];
$query = "SELECT member_name FROM team";
$result = mysqli_query($conn, $query);
if(!$result) {
echo "<p>Query failed to execute, Error with: ", $query, "</p>";
}
$queryFetch = mysqli_fetch_row($result);
//echo "<p> $queryResult1</p>";
$m=0;
while($queryFetch)
{
$mQueryFetch[$m] = $queryFetch[0];
$queryFetch = mysqli_fetch_row($result);
$m++;
}
$i=0;
$query2 = "SELECT member_id
FROM team
WHERE member_name='$memberHid'";
$result2 = @mysqli_query($conn, $query2);
$queryFetchResult = mysqli_fetch_row($result);
$memId = $queryFetchResult[0];
$query3 = "SELECT COUNT(*)
FROM myteam
WHERE member_id1 = '$memId'"; //query for counting the no of friends
$resultSelect = @mysqli_query($conn,$query3)
or die ("<p>Query failed to execute.</p>". "<p>Error with:" . mysqli_errno($conn) .":" . mysqli_error($conn))."</p>";
$arCount = mysqli_fetch_row($resultSelect);
echo "<p>Number of Current team member is"." ". $arCount[0]." "."</p>";
$querySelect = "SELECT member_id2 FROM myteam WHERE member_id1 = '$memId'";
$resultSelect2 = @mysqli_query($conn, $querySelect);
$memArr = mysqli_fetch_row($resultSelect2);
if($memArr)
{
while($memArr)
{
foreach($memArr as $value)
{
$querySelect3 = "SELECT member_name
FROM team
WHERE member_id = '$value'";
$queryResult = @mysqli_query($conn,$querySelect3);
$fetchArr = mysqli_fetch_row($queryResult);
foreach($fetchArr as $value)
{
$newDat[$a] = $value;
$a++;
}
}
$memArr = mysqli_fetch_row($resultSelect2);
}
$curLog = array_diff($mQueryFetch, $newDat); //for displaying profile names without the currently logged in user and his old friends profile names
$querySelect2 = "SELECT member_name
FROM team;";
$querySelectResult = @mysqli_query($conn,$querySelect2)
or die ("<p>Query Failed to Execute.</p>". "<p>Error with" . mysqli_errno($conn) .":" . mysqli_error($conn))."</p>";
echo "<table width='20%' border='1'>";
echo "<tr><th>Member Name</th>";
echo "<th>Status</th></tr>";
$fetchArray = mysqli_fetch_row($querySelectResult);
foreach($diff as $value)
{
if($value!=$_SESSION['membername'])
{
echo "<tr><td>{$value}</td>";
$memberHid1 = $value;
$memberHid = $_SESSION['membername'];
echo "<td>"?>
<form action ="memberaddprocess.php" method = "post" >
<?php echo'<input type="hidden" name="memberHid1" value="'.htmlspecialchars($memberHid1).'" />';?>
<?php echo'<input type="hidden" name="memberHid" value="'.htmlspecialchars($memberHid).'" />';?>
<p><input type="submit" name="Addmember" value="AddMember" /></p>
</form>
<?php "</td></tr>";
}
$fetchArray = mysqli_fetch_row($querySelectResult);
}
echo"</table>";
}
else
{
$n=0;
$querySelect2 = "SELECT member_name FROM team ; ";
$querySelectResult = @mysqli_query($conn, $querySelect2)
or die ("<p>Query Failed to Execute.</p>". "<p>Error with" . mysqli_errno($conn) .":" . mysqli_error($conn))."</p>";
$fetchArray = mysqli_fetch_row($querySelectResult);
while($fetchArray)
{
if($fetchArray[0] != $_SESSION['membername'])
{
$name[$n] = $fetchArray[0];
$n++;
}
$fetchArray = mysqli_fetch_row($querySelectResult);
}
sort($name);
echo "<table width='20%' border='1'>";
echo "<tr><th>Member Name</th>";
echo "<th>Status</th></tr>";
for($n = 0; $n<sizeof($name); $n++)
{
$memberHid1 = $name[$n];
$memberHid = $_SESSION['membername'];
echo "<tr><td>{$memberHid1}</td>";
echo "<td>"?>
<form action ="memberaddprocess.php" method = "post" >
<?php echo'<input type="hidden" name="memberHid1" value="'.htmlspecialchars($memberHid1).'" />';?>
<?php echo'<input type="hidden" name="memberHid" value="'.htmlspecialchars($memberHid).'" />';?>
<p><input type="submit" name="Addmember"value="AddMember" /></p>
</form>
<?php "</td></tr>";
}
echo "</table>";
}
echo"<p><a href='memberlist.php'>List members</a></p>";
echo"<p><a href='logout.php'>Log out</a></p>";
}
else
{
echo "<p> Unauthorized access.Pls login</p>";
echo"<p><a href='login.php'>Log in</a></p></div>";
}
?>
这是我的memberaddprocess.php代码
<?php
//////////////////////////////////////
session_start();
require_once('sqlconnect.inc.php');
/////////////////////////////////////
$memberHid1 = $_POST['memberHid1'];
$new_session = $_POST['memberHid'];
$conn = @mysqli_connect($host,
$user,
$pswd,
$dbnm);
if (!$conn) {
echo "<p>Database connection failure</p>";
} else {
@mysqli_select_db($conn, $dbnm)
or die ("Database not available");
}
$query = "SELECT member_id
FROM team
WHERE member_name = '$memberHid1'";
$queryResult = @mysqli_query($conn, $query)
or die ("<p>Unable to execute query.</p>". "<p>Error code:" . mysqli_errno($conn) .":" . mysqli_error($conn));
$fetchArr = mysqli_fetch_row($queryResult);
$memberHid3 = $fetchArr[0];
$memberHid = $_SESSION['membername'] = $new_session;
$query2 = "SELECT member_id
FROM member
WHERE member_name = '$memberHid'";
$queryResult2 = @mysqli_query($conn,$query2)
or die ("<p>Unable to execute query.</p>". "<p>Error code" . mysqli_errno($conn) .":" . mysqli_error($conn));
$fetchArr2 = mysqli_fetch_row($queryResult2);
$memberHid4 = $fetchArr2[0];
$query3 = "INSERT INTO myteam
VALUES($memberHid4, $memberHid3)";
$queryResult3 = @mysqli_query($conn,$query3)
or die ("<p>Unable to execute query.</p>". "<p>Error code" . mysqli_errno($conn) .":" . mysqli_error($conn))."</p>";
echo "<p>$memberHid1"." "." Successfully added</p>";
$queryCount = "SELECT COUNT(*)
FROM team";
$countResult = @mysqli_query($conn,$queryCount);
$fetchCountArr = mysqli_fetch_row($countResult);
for($n=0;$n<$fetchCountArr[0];$n++)
{
$pst = $n+1;
$query4 = "SELECT member_id2
FROM myteam
WHERE friend_id1 = '$pst'";
$countResult2 = @mysqli_query($conn,$query4);
$countArr = mysqli_fetch_row($countResult2);
$a=0;
while($countArr)
{
$a++;
$countArr = mysqli_fetch_row($countResult2); //echo "<p>$a</p>";
}
$query4 = "UPDATE team
SET num_of_members= '$a'
WHERE member_id = '$pst' ";
$countResult2 = @mysqli_query($conn,$query4);
}
$querySelect = "SELECT member_id2
FROM myteam
WHERE member_id1 = '$memberHid4'";
$querySelectResult = @mysqli_query($conn, $querySelect);
$fetchArr = mysqli_fetch_row($querySelectResult);
while($fetchArr)
{
foreach($fetchArr as $value)
{
//echo $value;
$querySelect2 = "SELECT member_name
FROM friends where friend_id='$value'";
$querySelectResult2 = @mysqli_query($conn, $querySelectResult2);
$fetchArr2 = mysqli_fetch_row($querySelectResult2);
foreach($fetchArr2 as $value)
{
//echo $value;
}
}
$fetchArr = mysqli_fetch_row($querySelectResult);
}
header("Location:memberadd.php");
echo('<a href="memberlist.php">Updated memberlist</a></p></div>');
//header('Location: friendadd.php');
?>
答案 0 :(得分：0)
确定问题并不容易，但我在mysql论坛（MySQL says a table doesn't exist, when it does）上找到了一个可能与您的问题相关的主题。
确保计算机上没有其他mysql实例非常重要。这也可能导致您的问题。