如何在php中设置选择框默认值

Question

<?php
$options = array('volvo'=>'Volvo', 'saab' =>'Saab', 'audi' => 'Audi' );
echo "<select name='sss'>
";
foreach ($options as $k=>$v) echo "<option value='$v' >$k</option>
";
echo "</select>
";
?>

Question:

how to make 'audi' as the default value instead of 'volvo'? I know we can set 'selected' in html, but how could i do it in this php script?

Answer 1

You could detect if the default value is the one you want and insert the HTML you already identified:

$defaultVal = 'Audi';
foreach ($options as $k=>$v) {
    $selected = ($v == $defaultVal) ? " selected='selected'" : "";
    echo "<option value='$v'$selected>$k</option>
";
}