[英]how to create pagination with next and previous button?
碼:
<table>
<tr style="background: white url(bg.gif) repeat-x left top;color: #fff;">
<th>College Id</th>
<th>College Name</th>
<th>Website</th>
<th>Field</th>
<th>City</th>
<th>Action</th>
</tr>
<?php
$per_page=10;
if (isset($_GET["page"]))
{
$page = $_GET["page"];
}
else {
$page=1;
}
$start_from = ($page-1) * $per_page;
$sql="select * from all_colleges LIMIT $start_from, $per_page";
$result = mysqli_query($link,$sql);
while ($row = mysqli_fetch_array($result))
{
?>
<tr>
<td><?php echo $row['college_id']; ?></td>
<td><?php echo $row['college_name']; ?></td>
<td><?php echo $row['website']; ?></td>
<td><?php echo $row['field']; ?></td>
<td><?php echo $row['city']; ?></td>
<td>
<a class='view' title='view' href='view.php?id=<?php echo $row['college_id']; ?>'>
<img src='gridview/view.png' alt='view' />
</a>
<a class='update' title='Update' href='update.php?id=<?php echo $row['college_id']; ?>'>
<img src='gridview/update.png' alt='Update' />
</a>
<a class='delete' title='delete' href='delete.php?ad_id=<?php echo $row['college_id']; ?>'>
<img src='gridview/delete.png' alt='delete' />
</a>
</td>
</tr>
<?php
}
?>
</table>
<div style="padding: 10px;">
<?php
$query = "select * from all_colleges";
$result = mysqli_query($link, $query);
$total_records = mysqli_num_rows($result);
$total_pages = ceil($total_records / $per_page);
echo "<center><a href='admin.php?page=1' style='padding:5px;'>".'previous'."</a>";
for ($i=1; $i<=$total_pages; $i++) {
echo "<a href='admin.php?page=".$i."'>".$i."</a>";
}
echo "<a href='admin.php?page=$total_pages'>".'next'."</a></center>";
?>
</div>
在這段代碼中,我想用下一個和上一個按鈕創建一個分頁,此代碼正常工作,但是顯示不同的分頁,即如果結果數為200,則它將顯示為
previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 next
但我想要
previous 1 2 3 4 5 ....8 9 next
請問我該怎么做?
謝謝
如果要顯示數字,可以檢查循環的每個迭代。
在以下代碼中,僅:
顯示。
$skipped = false;
for ($i = 1; $i <= $total_pages; $i++) {
if ($i < 3 || $total_pages- $i < 3 || abs($page - $i) < 3) {
if ($skipped)
echo '<span> ... </span>';
$skipped = false;
echo "<a href='admin.php?page=" . $i . "'>" . $i . "</a>";
} else {
$skipped = true;
}
}
如果頁面很多,則不需要大循環。
相反,您可以使用三個不同的循環:
$done = [];
for ($i = 1; $i < 3; $i++) {
$done[$i] = true;
//echo
}
if ($page > 3)
echo '<span> ... </span>';
for ($i = $page - 2; $i < $page + 3; $i++) {
if (isset($done[$i])
continue;
$done[$i] = true;
//echo
}
if ($page < $total_pages - 3)
echo '<span> ... </span>';
for ($i = $total_pages- 2; $i < $total_pages; $i++) {
if (isset($done[$i])
continue;
$done[$i] = true;
//echo
}
要修復其他兩個按鈕( previous
和next
),請鏈接到$page - 1
和$page + 1
而不是1
和$total_pages
。
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