代码工作正常,localhost上有几个页面,但这不能在服务器上运行,并显示像"mysql_num_rows() expects parameter 1 to be resource, boolean given in /home2/tp/public_html/ols/admin/delete-employee.php on line 23
这样的排序警告。它总是让我感到困惑,因为它在某个页面上工作,并且在某些时候显示了一条让我很沮丧的警告信息。
请帮助..
<?php
include('includes/start.php');
require_once('includes/header.html');
?>
<?php
$page_title = 'View Employees';
require_once("../dbcon.php");
$query = "SELECT
fname
, lname
, eid
, fname
, mname
, lname
, posid
, date_added
FROM
ccse.employee";
$result = @mysql_query($query);
$num = mysql_num_rows($result);
if($num > 0){
echo "<p align='center'>There are $num employees found on the system!</p>\n";
if($result){
echo '<table align="center" border="1" bgcolor="lightgreen">
<tr>
<td colspan="111" align="center"><b>List of Employees</td></tr>
<tr>
<td align="center"><b>Employee ID</a></b></td>
<td align="center"><b>First Name</a></b></td>
<td align="center"><b>Middle Name</a></b></td>
<td align="center"><b>Last Name</a></b></td>
<td align="center"><b>Position</a></b></td>
<td align="center"><b>Date Added</a></b></td>
<td align="center"><b>Action</a></b></td>
</tr>';
$bg = '#eeeeee';
while($row=mysql_fetch_array($result, MYSQL_ASSOC)){
$bg = ($bg == '#eeeeee' ? '#ffffff' : '#eeeeee');
echo '<tr bgcolor="'.$bg.'">
<td align="left">'.$row['eid'].'</td>
<td align="left">'.$row['fname'].'</td>
<td align="left">'.$row['mname'].'</td>
<td align="left">'.$row['lname'].'</td>
<td align="left">'.$row['posid'].'</td>
<td align="left">'.$row['date_added'].'</td>
<td align="left"><a href="del_emp.php?id='.$row['eid'].'"><img src="../images/delete.jpg" width="50" height="20"></a></td>
</tr>';
}
echo '</table>';
//------------------End of Get list of Employees--------
mysql_free_result($result);
}else{
echo '<p class="error">There are currently no entered employees in the system!</p>';
/*echo '<p class="error">Data Can Not Be Retrieved!</p>';
echo '<p>'.mysql_error().'<br /><br />Query:'.$query.'</p>';*/
}
mysql_close();
if($num_pages > 1){
echo '<br /><p>';
$current_page = ($start/$display) + 1;
if($current_page !=1){
echo '<a href="profile_emp.php?s='.($start - $display).'&np='.$num_pages.'$sort='.$sort.'" />Previous</a>';
}
for($i = 1; $i <=$num_pages; $i++){
if($i !=$current_page){
echo '<a href="emp-list.php?s='.(($display * ($i-1))).'&np='.$num_pages.'$sort='.$sort.'" />'.$i.'</a>';
}else{
echo $i.'';
}
}
if($current_page !=$num_pages){
echo '<a href="emp-list.php?s='.($start + $display).'&np='.$num_pages.'$sort='.$sort.'" />Next</a>';
}
echo '</p>';
}
//------End of Paging Result----
}
?>
<?php
echo "<br>";echo "<br>";
include('../includes/footer.html');
?>
答案 0 :(得分:0)
MySQL_num_rows失败的原因是因为$result
可能只是false
- 这发生在失败的查询中。使用MySQL_error()
查找查询中的错误位置 - 可能是错误的数据库等等 - 我还建议远离MySQL_
函数,因为它们已被弃用。请改用mysqli_
。