我在編寫php5分頁時出錯了？

Question

我正在寫分頁代碼&我得到了一個錯誤。 這是我的代碼：

<?php 
mysql_connect("localhost", "root", "") or die(mysql_error()); 
mysql_select_db("Admin") or die(mysql_error()); 

if (isset($_GET["page"])) 
{ 
$page = $_GET["page"]; 
} 
else 
{ 
$page=1; 
} 



$start_from = ($page-1) * 2; 
$sql = "SELECT * FROM events ORDER BY event ASC LIMIT $start_from, 2"; 
$result = mysql_query ($sql) or die(mysql_error()); 
$num=mysql_numrows($result); 
$x=0; 
?> 
<table> 
<tr><td>Event</td><td>Types</td></tr> 
<?php 
while ($x<$num) { 
$row1 = mysql_result($result,$x,'event'); 
$row2 = mysql_result($result,$x,'types'); 
?> 
      <tr> 
      <td><? echo $row1; ?></td> 
      <td><? echo $row2; ?></td> 
      </tr> 
<?php 
$x++; 
} 
?> 
</table> 
<?php 
$sql = "SELECT COUNT(event) FROM events"; 
$result = mysql_query($sql) or die(mysql_error()); 
$row = mysql_fetch_row($result); 
$total_records = $row[0]; 
$total_pages = ceil($total_records/2); 

for ($i=1; $i<=$total_pages; $i++) { 
      echo "<a href='pagination.php?page=".$i."'>".$i."</a> "; 
} 

?> 

現在我得到了一個錯誤。

object not found 

Answer 1

注意，而不是可怕的while ($x<$num)你應該使用方式更加整齊while($row=mysql_fetch_array($res))
所以，使其

<? 
$per_page = 2; 
$page = 1; 
if (isset($_GET['page'])) $page = $_GET['page']; 
$start_from = ($page-1) * $per_page; 
$sql = "SELECT * FROM events ORDER BY event ASC LIMIT $start_from, $per_page"; 
$res = mysql_query ($sql) or trigger_error(mysql_error().": ".$sql); 
?> 
<table> 
    <tr><td>Event</td><td>Types</td></tr> 
<?php 
while($row=mysql_fetch_array($res)) { 
?> 
    <tr> 
    <td><? echo $row['event'] ?></td> 
    <td><? echo $row['types'] ?></td> 
    </tr> 
<?php 
} 
?> 
</table> 
<?php 
$sql = "SELECT COUNT(event) FROM events"; 
$res = mysql_query ($sql) or trigger_error(mysql_error().": ".$sql); 
$row = mysql_fetch_row($res); 
$total_records = $row[0]; 
$total_pages = ceil($total_records/$per_page); 

for ($i=1; $i<=$total_pages; $i++) { 
    echo "<a href='pagination.php?page=".$i."'>".$i."</a> "; 
} 
?> 

Answer 2

mysql_query返回false - 也就是您的查詢失敗，您傳遞了錯誤的參數mysql_num_rows。我認爲你在SQL查詢中的表名中有一個拼寫錯誤，它應該是events。一般來說，你應該檢查，如果查詢成功：

$result = mysql_query ($sql) or trigger_error(mysql_error().": ".$sql);