Php 使子类别下拉列表
我想为儿童类别下拉,我有这个代码,但它不工作Php 使子类别下拉列表,php,wordpress,Php,Wordpress,我想为儿童类别下拉,我有这个代码,但它不工作 <select name="event-dropdown" onchange='document.location.href=this.options[this.selectedIndex].value;'> <option value=""><?php echo attribute_escape(__('Select Event')); ?></option> <?php $cat
<select name="event-dropdown" onchange='document.location.href=this.options[this.selectedIndex].value;'>
<option value=""><?php echo attribute_escape(__('Select Event')); ?></option>
<?php
$categories= get_categories('child_of=3');
foreach ($categories as $cat) {
$option = '<option value="/category/archive/'.$cat->category_nicename.'">';
$option .= $cat->cat_name;
$option .= ' ('.$cat->category_count.')';
$option .= '</option>';
echo $option;
}
?>
</select>
参数必须使用此数组
$categories = get_categories( array( 'child_of' => 10 );
而不是
$categories= get_categories('child_of=3');
谢谢,但它不起作用,我找到了另一个解决方案
<li id="categories"><h2><?php _e( 'category-name' ); ?></h2>
<?php wp_dropdown_categories('include=3,10' ); ?>
<script type="text/javascript">
<!--
var dropdown = document.getElementById("cat");
function onCatChange() {
if ( dropdown.options[dropdown.selectedIndex].value > 0 ) {
location.href = "<?php echo esc_url( home_url( '/' ) ); ?>?cat="+dropdown.options[dropdown.selectedIndex].value;
}
}
dropdown.onchange = onCatChange;
-->
</script>
</li>
我强烈建议使用模板引擎!