我试图在下拉菜单中列出一定数量的产品类别（x），但如果产品类别总数大于x，则只列出x减去1，并在最后显示“查看所有类别”链接。我试图实现的是每列只有8个条目（包括查看所有链接），总共有4列。
我是个初学者，已经用尽了if/else逻辑的知识。我尝试过的一切都把结果搞砸了。
下面是基本代码，它以8列的形式列出它们，总计32列。我想如果有33个或更多的类别，第32个类别将成为所有类别的链接。如果只有32个，那么只列出所有32个，没有链接。
<?php
$args = array(
\'taxonomy\' => \'product_cat\',
\'orderby\' => \'name\',
\'number\' => 32, //maximum to list
\'title_li\' => \'\',
\'show_count\' => 0, // 1 for yes, 0 for no
\'pad_counts\' => 0, // 1 for yes, 0 for no
\'hierarchical\' => 1, // 1 for yes, 0 for no
\'hide_empty\' => 0, // 1 for yes, 0 for no
\'echo\' => 0, // 1 for yes, 0 for no
\'exclude\' => \'73, 74, 16\', //best sellers, new, and uncategorized
\'depth\' => \'1\', //top level categories, not sub
\'style\' => \'\', //default is list with bullets, \'\' is without
);
// Grab top level categories
$get_cats = wp_list_categories($args);
// Split into array items
$cat_array = explode("<br />",$get_cats);
// Amount of categories (count of items in array)
$results_total = count($cat_array);
// How many tags to show per list-8)
$remainder = ($results_total-8);
$cats_per_list = ($results_total-$remainder);
// Counter number for tagging onto each list
$list_number = 1;
// Set the category result counter to zero
$result_number = 0;
?>
<div class="cat_columns" id="cat-col-<?php echo $list_number; ?>">
<?php
foreach($cat_array as $category) {
$result_number++;
if($result_number >= $cats_per_list) {
$result_number = 0;
$list_number++;
echo \'<div>\'.$category.\'</div> </div> <div class="cat_columns" id="cat-col-\'.$list_number.\'">\';
}
else {
echo \'<div>\'.$category.\'</div>\';
}
}
echo \'<a href="https://www.aaaa.com/all-categories//">View Categories</a>\';
?>
SO网友:LoicTheAztec
以下内容将在4列中显示最多32个术语（产品类别），因此按列显示8个项目。如果有32个以上的术语，则将第32个术语替换为“查看类别”自定义链接项：
<?php
## Settings
$items_per_col = 8; // Number of items by column
$number_of_cols = 4; // Number of columns
$taxonomy = \'product_cat\'; // WooCommerce product category taxonomy
$excluded_ids = \'73, 74, 16\'; // Excluding "best sellers", "New" and "Uncategorized" terms Ids
## Initializing variables
$col_count = 1;
$counter = 0;
$html = \'\';
$max_items = $number_of_cols * $items_per_col; // Max number of items (calculation)
$terms_list = wp_list_categories( array(
\'taxonomy\' => $taxonomy,
\'number\' => ( $max_items + 1 ), // 33 max
\'title_li\' => \'\', // disabled
\'pad_counts\' => 0, // no
\'hide_empty\' => 0, // no
\'echo\' => 0, // return (not echo)
\'style\' => \'\', // Without style (bullets)
\'depth\' => \'1\', // Top level terms only
\'exclude\' => $excluded_ids,
) );
$terms_array = explode( "<br />", $terms_list ); // Split each item in an array of terms
array_pop($terms_array); // <== We remove last empty item from the array.
$items_count = count($terms_array); // get items (terms) count
// Loop through product categories terms
foreach ( $terms_array as $term_html ) {
if ( $counter == 0 ) { // column start
$html .= \'<div class="cat-columns" id="cat-col-\' . $col_count . \'" style="float:left; margin: 0 10px;">\';
}
if( $items_count > $max_items && $col_count == $number_of_cols && $counter == ($items_per_col - 1) ) {
$link = home_url( "/all-categories/", "https" );
$html .= \'<div><a href="\' . $link . \'">\' . __("View Categories") . \'</a></div>\';
}
else {
$html .= \'<div data-counter="\'.$counter.\'">\' . $term_html . \'</div>\';
}
$counter++; // Increase items counter
if ( $counter == $items_per_col ) { // column end
$html .= \'</div>\';
$counter = 0; // Reset items counter
$col_count++; // Increase colum count
if ( $col_count > $number_of_cols ) {
break; // Stop the loop (to be sure)
}
}
}
## html output
echo \'<div class="categories-wrapper">\' . $html. \'</div>\';
?>
已测试并正常工作。
