php下拉列表排序

Question

I am displaying in a dropdown menu a list of values and the problem is that I cannot sort them.

Every option has a value eg dog->15 cat->17 apple->22 chair->32

I have tried to use the arsort or usort for defined function but nothing works.

Here is the part of displaying the values

<div class="categoryselect">
<?php echo $this->lists['catid']; ?>
</div>

And here is where the dropdown is created

$lists['catid']     = JHTML::_('select.genericlist',$category,  'catid', 'class="inputtext" onchange="select_cate(this.value)"  ', 'value', 'text',$cat_id );

As I said I have use user defined sort functions but it seems that only the key value is affected.

Any help is appreciated

Thank you

Answer 1

The sample code below sorts the PHP associative array in ascending order

<div class="categoryselect">
    <?php 
        arsort($this->lists['catid']); // according to value. To sort by key use ksort(lists)
        echo $this->lists['catid']; 
    ?>
</div>