我正在运行一个相当直接的mysql请求，并将结果返回到一个表。数据库中有三条记录，查询是从两个表中提取的。结果，我得到了三条记录的计数(回显mysql_num_rows)，但表中只显示了两条。对数组结果使用print_r命令只显示一条特定的记录—其他记录确实在print-r中显示。我向数据库中添加了另一条记录，现在显示了三条记录—与之前相同的记录没有显示，并且是print_r命令中的唯一记录。以下是相关代码:
<td id="page1">
<?php
$limit = 15; // Set limit to show for pagination
$page = $_GET['page']; // get page number from submit
if($page)
$start = ($page - 1) * $limit; // first item to display on this page
else
$start = 0; // if no page var is given, set start to 0
$query = "SELECT PartyMstr.PartyMstrID, UserName, FirstName, LastName, XrefPartyRoleID
FROM PartyMstrRole, PartyMstr
WHERE PartyMstr.PartyMstrID = PartyMstrRole.PartyMstrID &&
PartyMstrRole.XrefPartyRoleID = 1
ORDER BY LastName, FirstName ASC
LIMIT $start, $limit
";
$result = mysql_query($query, $connection);
$row = mysql_fetch_array($result) or die(mysql_error());
$totalitems1 = mysql_num_rows($result);
?>
<center><h3> Admin User List </h3></center>
<?php
echo "<table border='"1'" align='"center'">";
echo "<tr><th>PartyMaster ID</th>";
echo "<th>UserName</th>";
echo "<th>Last, First</th>";
echo "<th>Link</th></tr>";
while($row = mysql_fetch_array($result)) {
echo "<tr><td>";
echo $row['PartyMstrID'];
echo "<td>";
echo $row['UserName'];
echo "<td>";
echo " " . $row['LastName'] . ", " . $row['FirstName'] . " ";
echo "<td>";
echo "<a href = '"http://www.505575.com/editUser.php?id=" . $row['PartyMstrID'] . "'" >Edit</a>";
// echo "<td>";
// echo $row['XrefPartyRoleID'];
echo "</td></tr>";
}
echo "</table><br/><br/> ";
$paginaton = getPaginationString( $page, $totalitems, $limit,
$adjacents = 1,
$targetpage = "adminUserList.php",
$pagestring = "?page="
); // Functon found in functions.php
echo $paginaton;
?>
</td>
我花了很多时间在网上寻找一个解释，但没有成功。我已经关闭了$pagination代码行，但没有效果。我已经尝试了各种其他技巧和回声输出。返回的行数(n)总是正确的，但只有n-1行出现在表中。有什么想法吗?
Thanks - Don
每次调用mysql_fetch_array时，您都从资源中获取一行。当资源没有更多行可提供时，它返回false。这就是while ($a = mysql_fetch_array($resource))循环的工作原理。
$result = mysql_query($query, $connection);
$row = mysql_fetch_array($result) or die(mysql_error());
$totalitems1 = mysql_num_rows($result);
// first row is taken from resource
....
while($row = mysql_fetch_array($result))
// now take the rest of the rows
$row = mysql_fetch_array($result) or die(mysql_error());，因为它没有任何用途。
在while循环之外获取第一个结果
$query = "SELECT PartyMstr.PartyMstrID, UserName, FirstName, LastName, XrefPartyRoleID
FROM PartyMstrRole, PartyMstr
WHERE PartyMstr.PartyMstrID = PartyMstrRole.PartyMstrID && PartyMstrRole.XrefPartyRoleID = 1
ORDER BY LastName, FirstName ASC
LIMIT $start,$limit";
$result = mysql_query($query, $connection);
$row = mysql_fetch_array($result) or die(mysql_error());
$totalitems1 = mysql_num_rows($result);
必须是:
$query = "SELECT PartyMstr.PartyMstrID, UserName, FirstName, LastName, XrefPartyRoleID
FROM PartyMstrRole, PartyMstr
WHERE PartyMstr.PartyMstrID = PartyMstrRole.PartyMstrID && PartyMstrRole.XrefPartyRoleID = 1
ORDER BY LastName, FirstName ASC
LIMIT $start,$limit";
$result = mysql_query($query, $connection);
$totalitems1 = mysql_num_rows($result);
正如其他人所说，问题是在进入while循环之前，在$result = mysql_query( ...之后的行中调用mysql_fetch_array()一次。这将从结果中取出第一行，但您不会对它做任何操作。然后，当您开始while循环时，您再次调用mysql_fetch_array()，但由于您已经取了第一行，因此它从第二行开始。
好的，你必须明白为什么它忽略了1行，让我们看看$row = mysql_fetch_array($result)或die(mysql_error());这段代码已经获取了你的第一行，然后你在循环中获取，所以它指向行后已经获取。
$limit = 15; // Set limit to show for pagination
$page = $_GET['page']; // get page number from submit
if($page)
$start = ($page - 1) * $limit; // first item to display on this page
else
$start = 0; // if no page var is given, set start to 0
$query = "SELECT PartyMstr.PartyMstrID, UserName, FirstName, LastName, XrefPartyRoleID
FROM PartyMstrRole, PartyMstr
WHERE PartyMstr.PartyMstrID = PartyMstrRole.PartyMstrID &&
PartyMstrRole.XrefPartyRoleID = 1
ORDER BY LastName, FirstName ASC
LIMIT $start, $limit
";
$result = mysql_query($query, $connection);
$row = mysql_fetch_array($result) or die(mysql_error());
$totalitems1 = mysql_num_rows($result);
?>
<center><h3> Admin User List </h3></center>
<?php
echo "<table border='"1'" align='"center'">";
echo "<tr><th>PartyMaster ID</th>";
echo "<th>UserName</th>";
echo "<th>Last, First</th>";
echo "<th>Link</th></tr>";
while($row = mysql_fetch_array($result)) {
echo "<tr><td>";
echo $row['PartyMstrID'];
echo "<td>";
echo $row['UserName'];
echo "<td>";
echo " " . $row['LastName'] . ", " . $row['FirstName'] . " ";
echo "<td>";
echo "<a href = '"http://www.505575.com/editUser.php?id=" . $row['PartyMstrID'] . "'" >Edit</a>";
// echo "<td>";
// echo $row['XrefPartyRoleID'];
echo "</td></tr>";
}
echo "</table><br/><br/> ";
$paginaton = getPaginationString( $page, $totalitems, $limit,
$adjacents = 1,
$targetpage = "adminUserList.php",
$pagestring = "?page="
); // Functon found in functions.php
echo $paginaton;
?>
</td>