Php 分页在排序中不起作用
我有个问题。我对用户的工作可以输入他的信息，如，名称，图像等，然后所有的用户信息将显示在页面上的类别和排序也与分页 问题1。排序和分类单独运行良好，但在选择类别后排序不起作用。我想当用户选择一个类别，然后他也可以按所选类别排序 问题2。我的分页代码工作正常，但不正常，因为当我选择“类别”时，它没有分类工作，这与选择排序时的问题相同 谢谢 这是针对类别：Php 分页在排序中不起作用,php,mysql,wordpress,sorting,pagination,Php,Mysql,Wordpress,Sorting,Pagination,我有个问题。我对用户的工作可以输入他的信息，如，名称，图像等，然后所有的用户信息将显示在页面上的类别和排序也与分页 问题1。排序和分类单独运行良好，但在选择类别后排序不起作用。我想当用户选择一个类别，然后他也可以按所选类别排序 问题2。我的分页代码工作正常，但不正常，因为当我选择“类别”时，它没有分类工作，这与选择排序时的问题相同 谢谢 这是针对类别： <form action="" method="POST"> <select name="theme_category
<form action="" method="POST">
<select name="theme_category_name" >
<option class="form-control" >Select Your Categories</option>
<?php
global $wpdb;
$table_name ="theme_category";
$category = $wpdb->get_results( "SELECT * from $table_name" );
foreach($category as $categories){
?>
<option class="form-control" ><?php echo $categories->theme_category_name;?></option>
<?php
}
?>
</select>
<input type="submit" class="btn btn-info" name="category_submit" value="GO"/>
</form>
<form action="" method="post">
<input type="submit" class="btn btn-default" name="Newest" value="Newest ">
<input type="submit" class="btn btn-default" name="high_price" value="High Price">
<input type="submit" class="btn btn-default" name="low_price" value="Low Price">
</form>
<?php
global $wpdb;
$table_name ="theme_upload";
//Pegination
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 1;
$limit = 2; // number of rows in page
$offset = ( $pagenum - 1 ) * $limit;
$total = $wpdb->get_var( "select count(*) as total from $table_name" );
$num_of_pages = ceil( $total / $limit );
$rowcount = $wpdb->num_rows;
$category_s = $_POST['theme_category_name'];
//Category Select
if(isset($_POST['category_submit']))
{
$result = $wpdb->get_results( "SELECT * from $table_name WHERE theme_cat_name = '$category_s' limit $offset, $limit");
}
//Newest
elseif(isset($_POST['Newest']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY id DESC limit $offset, $limit");
}
//Sorting for High Price
elseif (isset ($_POST['high_price']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY theme_price DESC limit $offset, $limit");
}
//Sorting for low Price
elseif (isset ($_POST['low_price']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY theme_price ASC limit $offset, $limit");
}
// Default Order
else {
$result = $wpdb->get_results( "SELECT * from $table_name limit $offset, $limit" );
}
if($rowcount>0){
foreach($result as $results){
//var_dump($results);
?>
<?php
}
}
else{
echo "<tr><td cols=an='5'>No records found</td></tr>";
}
?>
<?php
//Pagination Strat //
$page_links = paginate_links( array(
'base' => add_query_arg( 'pagenum', '%#%' ),
'format' => '',
'prev_text' => __( '«', 'text-domain' ),
'next_text' => __( '»', 'text-domain' ),
'total' => $num_of_pages,
'current' => $pagenum
) );
if ( $page_links ) {
echo '<div class="tablenav" style="width: 99%;"><div class="tablenav-pages" style="margin: 1em 0">' . $page_links . '</div></div>';
}
//Pagination END //
?>
<form action="" method="POST">
<select name="theme_category_name" >
<option class="form-control" value="all" >Select Your Categories</option>
<?php
global $wpdb;
$table_name ="theme_category";
$category = $wpdb->get_results( "SELECT * from $table_name" );
foreach($category as $categories){
?>
<option class="form-control" value="<?=$categories->theme_category_name?>" ><?php echo $categories->theme_category_name;?></option>
<?php
}
?>
</select>
<!-- Change these to buttons, share the name=submit -->
<button type="submit" class="btn btn-info" name="submit" value="category_submit">GO</button>
<!-- Move these into the same form tag and make them buttons -->
<button type="submit" class="btn btn-default" name="submit" value="Newest">Newest</button>
<button type="submit" class="btn btn-default" name="submit" value="high_price">High Price</button>
<button type="submit" class="btn btn-default" name="submit" value="low_price">Low Price</button>
</form>
<?php
global $wpdb;
$table_name ="theme_upload";
//Pegination
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 1;
$limit = 2; // number of rows in page
$offset = ( $pagenum - 1 ) * $limit;
$total = $wpdb->get_var( "select count(*) as total from $table_name" );
$num_of_pages = ceil( $total / $limit );
$rowcount = $wpdb->num_rows;
$category_s = $_POST['theme_category_name'];
// Get a list of valid categories
$categories = $wpdb->get_results( "SELECT theme_category_name from theme_category", ARRAY_A );
// Sort them into an array of values
$allowed_categories = array_column($categories, 'theme_category_name');
// Add in the default value (defined on your page)
$allowed_categories[] = 'all';
// Check the incoming value is valid / allowed
if(in_array($category_s, $allowed_categories) === false) {
// Set up your own error handling here
echo "Invalid category";
exit;
}
// define defaults
$where = $order_by = "";
// If a category is specified, define the WHERE clause
if($category_s !== 'all') {
$where = " WHERE theme_cat_name = '$category_s' ";
}
// Toggle your order_by values
switch($_POST['submit']) {
case 'Newest':
$order_by = " ORDER BY id DESC ";
break;
case 'high_price':
$order_by = " ORDER BY theme_price DESC ";
break;
case 'low_price':
$order_by = " ORDER BY theme_price ASC ";
break;
}
// Run only 1 SQL query to process all of the incoming information
$result = $wpdb->get_results( "SELECT * from $table_name $where $order_by LIMIT $offset, $limit" );
if($rowcount>0){
foreach($result as $results){
//var_dump($results);
?>
<?php
}
}
else{
echo "<tr><td cols=an='5'>No records found</td></tr>";
}
?>
<?php
//Pagination Strat //
$page_links = paginate_links( array(
'base' => add_query_arg( 'pagenum', '%#%' ),
'format' => '',
'prev_text' => __( '«', 'text-domain' ),
'next_text' => __( '»', 'text-domain' ),
'total' => $num_of_pages,
'current' => $pagenum
) );
if ( $page_links ) {
echo '<div class="tablenav" style="width: 99%;"><div class="tablenav-pages" style="margin: 1em 0">' . $page_links . '</div></div>';
}
//Pagination END //
?>
选择您的类别
<form action="" method="POST">
<select name="theme_category_name" >
<option class="form-control" >Select Your Categories</option>
<?php
global $wpdb;
$table_name ="theme_category";
$category = $wpdb->get_results( "SELECT * from $table_name" );
foreach($category as $categories){
?>
<option class="form-control" ><?php echo $categories->theme_category_name;?></option>
<?php
}
?>
</select>
<input type="submit" class="btn btn-info" name="category_submit" value="GO"/>
</form>
<form action="" method="post">
<input type="submit" class="btn btn-default" name="Newest" value="Newest ">
<input type="submit" class="btn btn-default" name="high_price" value="High Price">
<input type="submit" class="btn btn-default" name="low_price" value="Low Price">
</form>
<?php
global $wpdb;
$table_name ="theme_upload";
//Pegination
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 1;
$limit = 2; // number of rows in page
$offset = ( $pagenum - 1 ) * $limit;
$total = $wpdb->get_var( "select count(*) as total from $table_name" );
$num_of_pages = ceil( $total / $limit );
$rowcount = $wpdb->num_rows;
$category_s = $_POST['theme_category_name'];
//Category Select
if(isset($_POST['category_submit']))
{
$result = $wpdb->get_results( "SELECT * from $table_name WHERE theme_cat_name = '$category_s' limit $offset, $limit");
}
//Newest
elseif(isset($_POST['Newest']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY id DESC limit $offset, $limit");
}
//Sorting for High Price
elseif (isset ($_POST['high_price']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY theme_price DESC limit $offset, $limit");
}
//Sorting for low Price
elseif (isset ($_POST['low_price']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY theme_price ASC limit $offset, $limit");
}
// Default Order
else {
$result = $wpdb->get_results( "SELECT * from $table_name limit $offset, $limit" );
}
if($rowcount>0){
foreach($result as $results){
//var_dump($results);
?>
<?php
}
}
else{
echo "<tr><td cols=an='5'>No records found</td></tr>";
}
?>
<?php
//Pagination Strat //
$page_links = paginate_links( array(
'base' => add_query_arg( 'pagenum', '%#%' ),
'format' => '',
'prev_text' => __( '«', 'text-domain' ),
'next_text' => __( '»', 'text-domain' ),
'total' => $num_of_pages,
'current' => $pagenum
) );
if ( $page_links ) {
echo '<div class="tablenav" style="width: 99%;"><div class="tablenav-pages" style="margin: 1em 0">' . $page_links . '</div></div>';
}
//Pagination END //
?>
<form action="" method="POST">
<select name="theme_category_name" >
<option class="form-control" value="all" >Select Your Categories</option>
<?php
global $wpdb;
$table_name ="theme_category";
$category = $wpdb->get_results( "SELECT * from $table_name" );
foreach($category as $categories){
?>
<option class="form-control" value="<?=$categories->theme_category_name?>" ><?php echo $categories->theme_category_name;?></option>
<?php
}
?>
</select>
<!-- Change these to buttons, share the name=submit -->
<button type="submit" class="btn btn-info" name="submit" value="category_submit">GO</button>
<!-- Move these into the same form tag and make them buttons -->
<button type="submit" class="btn btn-default" name="submit" value="Newest">Newest</button>
<button type="submit" class="btn btn-default" name="submit" value="high_price">High Price</button>
<button type="submit" class="btn btn-default" name="submit" value="low_price">Low Price</button>
</form>
<?php
global $wpdb;
$table_name ="theme_upload";
//Pegination
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 1;
$limit = 2; // number of rows in page
$offset = ( $pagenum - 1 ) * $limit;
$total = $wpdb->get_var( "select count(*) as total from $table_name" );
$num_of_pages = ceil( $total / $limit );
$rowcount = $wpdb->num_rows;
$category_s = $_POST['theme_category_name'];
// Get a list of valid categories
$categories = $wpdb->get_results( "SELECT theme_category_name from theme_category", ARRAY_A );
// Sort them into an array of values
$allowed_categories = array_column($categories, 'theme_category_name');
// Add in the default value (defined on your page)
$allowed_categories[] = 'all';
// Check the incoming value is valid / allowed
if(in_array($category_s, $allowed_categories) === false) {
// Set up your own error handling here
echo "Invalid category";
exit;
}
// define defaults
$where = $order_by = "";
// If a category is specified, define the WHERE clause
if($category_s !== 'all') {
$where = " WHERE theme_cat_name = '$category_s' ";
}
// Toggle your order_by values
switch($_POST['submit']) {
case 'Newest':
$order_by = " ORDER BY id DESC ";
break;
case 'high_price':
$order_by = " ORDER BY theme_price DESC ";
break;
case 'low_price':
$order_by = " ORDER BY theme_price ASC ";
break;
}
// Run only 1 SQL query to process all of the incoming information
$result = $wpdb->get_results( "SELECT * from $table_name $where $order_by LIMIT $offset, $limit" );
if($rowcount>0){
foreach($result as $results){
//var_dump($results);
?>
<?php
}
}
else{
echo "<tr><td cols=an='5'>No records found</td></tr>";
}
?>
<?php
//Pagination Strat //
$page_links = paginate_links( array(
'base' => add_query_arg( 'pagenum', '%#%' ),
'format' => '',
'prev_text' => __( '«', 'text-domain' ),
'next_text' => __( '»', 'text-domain' ),
'total' => $num_of_pages,
'current' => $pagenum
) );
if ( $page_links ) {
echo '<div class="tablenav" style="width: 99%;"><div class="tablenav-pages" style="margin: 1em 0">' . $page_links . '</div></div>';
}
//Pagination END //
?>
<form action="" method="POST">
<select name="theme_category_name" >
<option class="form-control" >Select Your Categories</option>
<?php
global $wpdb;
$table_name ="theme_category";
$category = $wpdb->get_results( "SELECT * from $table_name" );
foreach($category as $categories){
?>
<option class="form-control" ><?php echo $categories->theme_category_name;?></option>
<?php
}
?>
</select>
<input type="submit" class="btn btn-info" name="category_submit" value="GO"/>
</form>
<form action="" method="post">
<input type="submit" class="btn btn-default" name="Newest" value="Newest ">
<input type="submit" class="btn btn-default" name="high_price" value="High Price">
<input type="submit" class="btn btn-default" name="low_price" value="Low Price">
</form>
<?php
global $wpdb;
$table_name ="theme_upload";
//Pegination
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 1;
$limit = 2; // number of rows in page
$offset = ( $pagenum - 1 ) * $limit;
$total = $wpdb->get_var( "select count(*) as total from $table_name" );
$num_of_pages = ceil( $total / $limit );
$rowcount = $wpdb->num_rows;
$category_s = $_POST['theme_category_name'];
//Category Select
if(isset($_POST['category_submit']))
{
$result = $wpdb->get_results( "SELECT * from $table_name WHERE theme_cat_name = '$category_s' limit $offset, $limit");
}
//Newest
elseif(isset($_POST['Newest']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY id DESC limit $offset, $limit");
}
//Sorting for High Price
elseif (isset ($_POST['high_price']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY theme_price DESC limit $offset, $limit");
}
//Sorting for low Price
elseif (isset ($_POST['low_price']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY theme_price ASC limit $offset, $limit");
}
// Default Order
else {
$result = $wpdb->get_results( "SELECT * from $table_name limit $offset, $limit" );
}
if($rowcount>0){
foreach($result as $results){
//var_dump($results);
?>
<?php
}
}
else{
echo "<tr><td cols=an='5'>No records found</td></tr>";
}
?>
<?php
//Pagination Strat //
$page_links = paginate_links( array(
'base' => add_query_arg( 'pagenum', '%#%' ),
'format' => '',
'prev_text' => __( '«', 'text-domain' ),
'next_text' => __( '»', 'text-domain' ),
'total' => $num_of_pages,
'current' => $pagenum
) );
if ( $page_links ) {
echo '<div class="tablenav" style="width: 99%;"><div class="tablenav-pages" style="margin: 1em 0">' . $page_links . '</div></div>';
}
//Pagination END //
?>
<form action="" method="POST">
<select name="theme_category_name" >
<option class="form-control" value="all" >Select Your Categories</option>
<?php
global $wpdb;
$table_name ="theme_category";
$category = $wpdb->get_results( "SELECT * from $table_name" );
foreach($category as $categories){
?>
<option class="form-control" value="<?=$categories->theme_category_name?>" ><?php echo $categories->theme_category_name;?></option>
<?php
}
?>
</select>
<!-- Change these to buttons, share the name=submit -->
<button type="submit" class="btn btn-info" name="submit" value="category_submit">GO</button>
<!-- Move these into the same form tag and make them buttons -->
<button type="submit" class="btn btn-default" name="submit" value="Newest">Newest</button>
<button type="submit" class="btn btn-default" name="submit" value="high_price">High Price</button>
<button type="submit" class="btn btn-default" name="submit" value="low_price">Low Price</button>
</form>
<?php
global $wpdb;
$table_name ="theme_upload";
//Pegination
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 1;
$limit = 2; // number of rows in page
$offset = ( $pagenum - 1 ) * $limit;
$total = $wpdb->get_var( "select count(*) as total from $table_name" );
$num_of_pages = ceil( $total / $limit );
$rowcount = $wpdb->num_rows;
$category_s = $_POST['theme_category_name'];
// Get a list of valid categories
$categories = $wpdb->get_results( "SELECT theme_category_name from theme_category", ARRAY_A );
// Sort them into an array of values
$allowed_categories = array_column($categories, 'theme_category_name');
// Add in the default value (defined on your page)
$allowed_categories[] = 'all';
// Check the incoming value is valid / allowed
if(in_array($category_s, $allowed_categories) === false) {
// Set up your own error handling here
echo "Invalid category";
exit;
}
// define defaults
$where = $order_by = "";
// If a category is specified, define the WHERE clause
if($category_s !== 'all') {
$where = " WHERE theme_cat_name = '$category_s' ";
}
// Toggle your order_by values
switch($_POST['submit']) {
case 'Newest':
$order_by = " ORDER BY id DESC ";
break;
case 'high_price':
$order_by = " ORDER BY theme_price DESC ";
break;
case 'low_price':
$order_by = " ORDER BY theme_price ASC ";
break;
}
// Run only 1 SQL query to process all of the incoming information
$result = $wpdb->get_results( "SELECT * from $table_name $where $order_by LIMIT $offset, $limit" );
if($rowcount>0){
foreach($result as $results){
//var_dump($results);
?>
<?php
}
}
else{
echo "<tr><td cols=an='5'>No records found</td></tr>";
}
?>
<?php
//Pagination Strat //
$page_links = paginate_links( array(
'base' => add_query_arg( 'pagenum', '%#%' ),
'format' => '',
'prev_text' => __( '«', 'text-domain' ),
'next_text' => __( '»', 'text-domain' ),
'total' => $num_of_pages,
'current' => $pagenum
) );
if ( $page_links ) {
echo '<div class="tablenav" style="width: 99%;"><div class="tablenav-pages" style="margin: 1em 0">' . $page_links . '</div></div>';
}
//Pagination END //
?>
主要问题是脚本运行SQL查询时相互隔离
我建议对代码进行一些修改，以基于可用的表单数据构建1个查询
此外，您还应该转义输入或执行某种检查传入的$\u POST值，而不仅仅是将类别名称的$\u POST值传递到SQL查询中。我已经添加了一个建议的解决方案，通过首先加载类别并检查是否有匹配项来确保$\u POST值有效
您可以在此处阅读有关在wordpress数据库类中使用预制语句的更多信息：
对于您的HTML部分：
<form action="" method="POST">
<select name="theme_category_name" >
<option class="form-control" >Select Your Categories</option>
<?php
global $wpdb;
$table_name ="theme_category";
$category = $wpdb->get_results( "SELECT * from $table_name" );
foreach($category as $categories){
?>
<option class="form-control" ><?php echo $categories->theme_category_name;?></option>
<?php
}
?>
</select>
<input type="submit" class="btn btn-info" name="category_submit" value="GO"/>
</form>
<form action="" method="post">
<input type="submit" class="btn btn-default" name="Newest" value="Newest ">
<input type="submit" class="btn btn-default" name="high_price" value="High Price">
<input type="submit" class="btn btn-default" name="low_price" value="Low Price">
</form>
<?php
global $wpdb;
$table_name ="theme_upload";
//Pegination
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 1;
$limit = 2; // number of rows in page
$offset = ( $pagenum - 1 ) * $limit;
$total = $wpdb->get_var( "select count(*) as total from $table_name" );
$num_of_pages = ceil( $total / $limit );
$rowcount = $wpdb->num_rows;
$category_s = $_POST['theme_category_name'];
//Category Select
if(isset($_POST['category_submit']))
{
$result = $wpdb->get_results( "SELECT * from $table_name WHERE theme_cat_name = '$category_s' limit $offset, $limit");
}
//Newest
elseif(isset($_POST['Newest']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY id DESC limit $offset, $limit");
}
//Sorting for High Price
elseif (isset ($_POST['high_price']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY theme_price DESC limit $offset, $limit");
}
//Sorting for low Price
elseif (isset ($_POST['low_price']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY theme_price ASC limit $offset, $limit");
}
// Default Order
else {
$result = $wpdb->get_results( "SELECT * from $table_name limit $offset, $limit" );
}
if($rowcount>0){
foreach($result as $results){
//var_dump($results);
?>
<?php
}
}
else{
echo "<tr><td cols=an='5'>No records found</td></tr>";
}
?>
<?php
//Pagination Strat //
$page_links = paginate_links( array(
'base' => add_query_arg( 'pagenum', '%#%' ),
'format' => '',
'prev_text' => __( '«', 'text-domain' ),
'next_text' => __( '»', 'text-domain' ),
'total' => $num_of_pages,
'current' => $pagenum
) );
if ( $page_links ) {
echo '<div class="tablenav" style="width: 99%;"><div class="tablenav-pages" style="margin: 1em 0">' . $page_links . '</div></div>';
}
//Pagination END //
?>
<form action="" method="POST">
<select name="theme_category_name" >
<option class="form-control" value="all" >Select Your Categories</option>
<?php
global $wpdb;
$table_name ="theme_category";
$category = $wpdb->get_results( "SELECT * from $table_name" );
foreach($category as $categories){
?>
<option class="form-control" value="<?=$categories->theme_category_name?>" ><?php echo $categories->theme_category_name;?></option>
<?php
}
?>
</select>
<!-- Change these to buttons, share the name=submit -->
<button type="submit" class="btn btn-info" name="submit" value="category_submit">GO</button>
<!-- Move these into the same form tag and make them buttons -->
<button type="submit" class="btn btn-default" name="submit" value="Newest">Newest</button>
<button type="submit" class="btn btn-default" name="submit" value="high_price">High Price</button>
<button type="submit" class="btn btn-default" name="submit" value="low_price">Low Price</button>
</form>
<?php
global $wpdb;
$table_name ="theme_upload";
//Pegination
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 1;
$limit = 2; // number of rows in page
$offset = ( $pagenum - 1 ) * $limit;
$total = $wpdb->get_var( "select count(*) as total from $table_name" );
$num_of_pages = ceil( $total / $limit );
$rowcount = $wpdb->num_rows;
$category_s = $_POST['theme_category_name'];
// Get a list of valid categories
$categories = $wpdb->get_results( "SELECT theme_category_name from theme_category", ARRAY_A );
// Sort them into an array of values
$allowed_categories = array_column($categories, 'theme_category_name');
// Add in the default value (defined on your page)
$allowed_categories[] = 'all';
// Check the incoming value is valid / allowed
if(in_array($category_s, $allowed_categories) === false) {
// Set up your own error handling here
echo "Invalid category";
exit;
}
// define defaults
$where = $order_by = "";
// If a category is specified, define the WHERE clause
if($category_s !== 'all') {
$where = " WHERE theme_cat_name = '$category_s' ";
}
// Toggle your order_by values
switch($_POST['submit']) {
case 'Newest':
$order_by = " ORDER BY id DESC ";
break;
case 'high_price':
$order_by = " ORDER BY theme_price DESC ";
break;
case 'low_price':
$order_by = " ORDER BY theme_price ASC ";
break;
}
// Run only 1 SQL query to process all of the incoming information
$result = $wpdb->get_results( "SELECT * from $table_name $where $order_by LIMIT $offset, $limit" );
if($rowcount>0){
foreach($result as $results){
//var_dump($results);
?>
<?php
}
}
else{
echo "<tr><td cols=an='5'>No records found</td></tr>";
}
?>
<?php
//Pagination Strat //
$page_links = paginate_links( array(
'base' => add_query_arg( 'pagenum', '%#%' ),
'format' => '',
'prev_text' => __( '«', 'text-domain' ),
'next_text' => __( '»', 'text-domain' ),
'total' => $num_of_pages,
'current' => $pagenum
) );
if ( $page_links ) {
echo '<div class="tablenav" style="width: 99%;"><div class="tablenav-pages" style="margin: 1em 0">' . $page_links . '</div></div>';
}
//Pagination END //
?>
选择您的类别
主要的问题是，您的脚本正在彼此隔离地运行SQL查询
我建议对代码进行一些修改，以基于可用的表单数据构建1个查询
此外，您还应该转义输入或执行某种检查传入的$\u POST值，而不仅仅是将类别名称的$\u POST值传递到SQL查询中。我已经添加了一个建议的解决方案，通过首先加载类别并检查是否有匹配项来确保$\u POST值有效
您可以在此处阅读有关在wordpress数据库类中使用预制语句的更多信息：
对于您的HTML部分：
<form action="" method="POST">
<select name="theme_category_name" >
<option class="form-control" >Select Your Categories</option>
<?php
global $wpdb;
$table_name ="theme_category";
$category = $wpdb->get_results( "SELECT * from $table_name" );
foreach($category as $categories){
?>
<option class="form-control" ><?php echo $categories->theme_category_name;?></option>
<?php
}
?>
</select>
<input type="submit" class="btn btn-info" name="category_submit" value="GO"/>
</form>
<form action="" method="post">
<input type="submit" class="btn btn-default" name="Newest" value="Newest ">
<input type="submit" class="btn btn-default" name="high_price" value="High Price">
<input type="submit" class="btn btn-default" name="low_price" value="Low Price">
</form>
<?php
global $wpdb;
$table_name ="theme_upload";
//Pegination
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 1;
$limit = 2; // number of rows in page
$offset = ( $pagenum - 1 ) * $limit;
$total = $wpdb->get_var( "select count(*) as total from $table_name" );
$num_of_pages = ceil( $total / $limit );
$rowcount = $wpdb->num_rows;
$category_s = $_POST['theme_category_name'];
//Category Select
if(isset($_POST['category_submit']))
{
$result = $wpdb->get_results( "SELECT * from $table_name WHERE theme_cat_name = '$category_s' limit $offset, $limit");
}
//Newest
elseif(isset($_POST['Newest']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY id DESC limit $offset, $limit");
}
//Sorting for High Price
elseif (isset ($_POST['high_price']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY theme_price DESC limit $offset, $limit");
}
//Sorting for low Price
elseif (isset ($_POST['low_price']))
{
$result = $wpdb->get_results( "SELECT * from $table_name ORDER BY theme_price ASC limit $offset, $limit");
}
// Default Order
else {
$result = $wpdb->get_results( "SELECT * from $table_name limit $offset, $limit" );
}
if($rowcount>0){
foreach($result as $results){
//var_dump($results);
?>
<?php
}
}
else{
echo "<tr><td cols=an='5'>No records found</td></tr>";
}
?>
<?php
//Pagination Strat //
$page_links = paginate_links( array(
'base' => add_query_arg( 'pagenum', '%#%' ),
'format' => '',
'prev_text' => __( '«', 'text-domain' ),
'next_text' => __( '»', 'text-domain' ),
'total' => $num_of_pages,
'current' => $pagenum
) );
if ( $page_links ) {
echo '<div class="tablenav" style="width: 99%;"><div class="tablenav-pages" style="margin: 1em 0">' . $page_links . '</div></div>';
}
//Pagination END //
?>
<form action="" method="POST">
<select name="theme_category_name" >
<option class="form-control" value="all" >Select Your Categories</option>
<?php
global $wpdb;
$table_name ="theme_category";
$category = $wpdb->get_results( "SELECT * from $table_name" );
foreach($category as $categories){
?>
<option class="form-control" value="<?=$categories->theme_category_name?>" ><?php echo $categories->theme_category_name;?></option>
<?php
}
?>
</select>
<!-- Change these to buttons, share the name=submit -->
<button type="submit" class="btn btn-info" name="submit" value="category_submit">GO</button>
<!-- Move these into the same form tag and make them buttons -->
<button type="submit" class="btn btn-default" name="submit" value="Newest">Newest</button>
<button type="submit" class="btn btn-default" name="submit" value="high_price">High Price</button>
<button type="submit" class="btn btn-default" name="submit" value="low_price">Low Price</button>
</form>
<?php
global $wpdb;
$table_name ="theme_upload";
//Pegination
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 1;
$limit = 2; // number of rows in page
$offset = ( $pagenum - 1 ) * $limit;
$total = $wpdb->get_var( "select count(*) as total from $table_name" );
$num_of_pages = ceil( $total / $limit );
$rowcount = $wpdb->num_rows;
$category_s = $_POST['theme_category_name'];
// Get a list of valid categories
$categories = $wpdb->get_results( "SELECT theme_category_name from theme_category", ARRAY_A );
// Sort them into an array of values
$allowed_categories = array_column($categories, 'theme_category_name');
// Add in the default value (defined on your page)
$allowed_categories[] = 'all';
// Check the incoming value is valid / allowed
if(in_array($category_s, $allowed_categories) === false) {
// Set up your own error handling here
echo "Invalid category";
exit;
}
// define defaults
$where = $order_by = "";
// If a category is specified, define the WHERE clause
if($category_s !== 'all') {
$where = " WHERE theme_cat_name = '$category_s' ";
}
// Toggle your order_by values
switch($_POST['submit']) {
case 'Newest':
$order_by = " ORDER BY id DESC ";
break;
case 'high_price':
$order_by = " ORDER BY theme_price DESC ";
break;
case 'low_price':
$order_by = " ORDER BY theme_price ASC ";
break;
}
// Run only 1 SQL query to process all of the incoming information
$result = $wpdb->get_results( "SELECT * from $table_name $where $order_by LIMIT $offset, $limit" );
if($rowcount>0){
foreach($result as $results){
//var_dump($results);
?>
<?php
}
}
else{
echo "<tr><td cols=an='5'>No records found</td></tr>";
}
?>
<?php
//Pagination Strat //
$page_links = paginate_links( array(
'base' => add_query_arg( 'pagenum', '%#%' ),
'format' => '',
'prev_text' => __( '«', 'text-domain' ),
'next_text' => __( '»', 'text-domain' ),
'total' => $num_of_pages,
'current' => $pagenum
) );
if ( $page_links ) {
echo '<div class="tablenav" style="width: 99%;"><div class="tablenav-pages" style="margin: 1em 0">' . $page_links . '</div></div>';
}
//Pagination END //
?>
选择您的类别