如何在PHP中按升序填充下拉列表？

Question

Details

• I want to populate a dropdown-menu of my county list in ascending order
• A-Z

What I've tried

Here is how I grab my countries array

<?php 

    if(is_array($distributors)) {

        foreach ($distributors as $k => $v)
        {
            $continents[$k] = $v['distributor']['continent_id'];
            $countries[$k] = $v['hq_country']['name'];
        }
        array_multisort( 

            $continents, SORT_ASC, 
            $countries, SORT_ASC, 

            $distributors);
    }

?>

Here is how I populate my dropdown menu

<!-- Dropdown-Menu : Country Names  -->
    <div class="col-sm-6 drop-down ">
        Select Country : 
        <select id="state" onchange="window.location=this.value" >
            <option value="">--Select--</option>
            <?php 
            foreach(array_unique($countries) as $country){ ?>
            <option value="#<?php echo $country ; ?> ">

            <?php echo $country ; ?>
            </option>
            <?php } ?>  
        </select>
    </div>

Here is my result

Want to see my list live ? HERE

Answer 1

According to your code, just comment out $continents, SORT_ASC, - It should work.

<?php 

    if(is_array($distributors)) {

        foreach ($distributors as $k => $v)
        {
            $continents[$k] = $v['distributor']['continent_id'];
            $countries[$k] = $v['hq_country']['name'];
        }
        array_multisort( 

            // $continents, SORT_ASC, 
            $countries, SORT_ASC, 

            $distributors);
    }

?>