Php 如果工作不正常,请在中分页
我正在构建一个搜索页面,用户可以通过一个字段进行搜索,然后显示表格。我试图通过php在其中实现分页,但分页不起作用。任何分页指南都会很有帮助。如果用户输入了第一个字段,而其他字段留空,我将给出其中一个字段的代码,还有其他条件Php 如果工作不正常,请在中分页,php,mysql,pagination,Php,Mysql,Pagination,我正在构建一个搜索页面,用户可以通过一个字段进行搜索,然后显示表格。我试图通过php在其中实现分页,但分页不起作用。任何分页指南都会很有帮助。如果用户输入了第一个字段,而其他字段留空,我将给出其中一个字段的代码,还有其他条件 if($item!="" && $brand=="" && $model=="") { $sql ="SELECT * FROM table WHERE Product LIKE '%".$item."%' "; $resul
if($item!="" && $brand=="" && $model=="") {
$sql ="SELECT * FROM table WHERE Product LIKE '%".$item."%' ";
$result = mysql_query($sql);
//$result1 = mysql_query($sql1);
$r = mysql_fetch_array($result);
$p=$r['Product'];
$b=$r['Brand'];
$m=$r['Model'];
if ($item!=$p) {
echo "<font style=\"color:Red;\"><h3>No Item Found!!!</h3></font>";
} else {
echo "<table class='table table-striped table-bordered bootstrap-datatable datatable'>
<thead>
<tr>
<th>Item</th>
<th>Brand</th>
<th>Model</th>
<th>Dealer Price</th>
<th>Quantity</th>
<th>Description</th>
</tr>
</thead>";
if (!(isset($pagenum))) {
$pagenum = 1;
}
//Here we count the number of results
//Edit $data to be your query
$data = mysql_query("SELECT * FROM table WHERE Product='$item' ") or die(mysql_error());
$rows = mysql_num_rows($data);
//This is the number of results displayed per page
$page_rows = 10;
//This tells us the page number of our last page
$last = ceil($rows/$page_rows);
//this makes sure the page number isn't below one, or more than our maximum pages
if ($pagenum < 1) {
$pagenum = 1;
} elseif ($pagenum > $last) {
$pagenum = $last;
}
//This sets the range to display in our query
$max = 'limit ' .($pagenum - 1) * $page_rows .',' .$page_rows;
$sqll ="SELECT * FROM table WHERE Product='$item' $max ";
$resultt = mysql_query($sqll);
echo "<tbody>";
while($row = mysql_fetch_array($resultt)) {
echo "<tr>";
echo "<td>" . $row['Product'] . "</td>";
echo "<td>" . $row['Brand'] . "</td>";
echo "<td>" . $row['Model'] . "</td>";
echo "<td>" . $row['Dprice'] . "</td>";
echo "<td>" . $row['Quantity'] . "</td>";
echo "<td>" . $row['Quality'] . "</td>";
echo "</tr>";
}
echo "</tbody>";
echo "</table>";
echo " --Page $pagenum of $last-- <p>";
// First we check if we are on page one. If we are then we don't need a link to the previous page or the first page so we do nothing. If we aren't then we generate links to the first page, and to the previous page.
if ($pagenum == 1) {
} else {
echo " <a href='{$_SERVER['PHP_SELF']}?pagenum=1'> <<-First</a> ";
echo " ";
$previous = $pagenum-1;
echo " <a href='{$_SERVER['PHP_SELF']}?pagenum=$previous'> <-Previous</a> ";
}
//just a spacer
echo " ---- ";
//This does the same as above, only checking if we are on the last page, and then generating the Next and Last links
if ($pagenum == $last) {
} else {
$next = $pagenum+1;
echo " <a href='{$_SERVER['PHP_SELF']}?pagenum=$next'>Next -></a> ";
echo " ";
echo " <a href='{$_SERVER['PHP_SELF']}?pagenum=$last'>Last ->></a> ";
}
} elseif($item=="" && $brand!="" && $model=="") {
……等等
我已尝试对表进行分页,第一页中有10行可见,但在进入下一页时,没有显示任何表,尽管表中还有其他数据。错误在于必须在第一个文件的顶部添加
$pagenum = filter_input(INPUT_GET, 'pagenum', FILTER_SANITIZE_NUMBER_INT);
如果不从$\u GET param为$pagenum赋值,则无法直接访问$pagenum
我希望这是有用的 您应该在文件的顶部添加此代码。示例:如果$item!=&$brand==&&$model=={我已经添加了这个,但问题仍然存在。它仍然没有显示任何内容?或者您有一些错误?没有错误,相同的问题仍然存在,单击下一页时没有显示任何表。请尝试输出此变量:$last,$rows