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How do I set the selected item in a drop down box

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误落风尘
误落风尘 2020-11-29 04:16

Is there any way to set the selected item in a drop down box using the following \'type\' code?
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  • 忘了有多久
    2020-11-29 04:46

    Simple and easy to understand example by using ternary operators to set selected value in php

    <?php $plan = array('1' => 'Green','2'=>'Red' ); ?>
<select class="form-control" title="Choose Plan">
<?php foreach ($plan as $id=> $value) { ?>
  <option value="<?php echo $id;?>" <?php echo ($id==  '2') ? ' selected="selected"' : '';?>><?php echo $value;?></option>
<?php } ?>
</select>
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  • 渐次进展
    2020-11-29 04:50

    You can use this method if you use a MySQL database:

    include('sql_connect.php');
$result = mysql_query("SELECT * FROM users WHERE `id`!='".$user_id."'");
while ($row = mysql_fetch_array($result))
{
    if ($_GET['to'] == $row['id'])
    {
        $selected = 'selected="selected"';
    }
    else
    {
    $selected = '';
    }
    echo('<option value="'.$row['id'].' '.$selected.'">'.$row['username'].' ('.$row['fname'].' '.substr($row['lname'],0,1).'.)</option>');
}
mysql_close($con);

    It will compare if the user in $_GET['to'] is the same as $row['id'] in table, if yes, the $selected will be created. This was for a private messaging system...

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  • 日久生厌
    2020-11-29 04:52

    You can try this after select tag:

    <option value="yes" selected>yes</option>
<option value="no">no</option>
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  • 名媛妹妹
    2020-11-29 04:55

    You mark the selected item on the <option> tag, not the <select> tag.

    So your code should read something like this:

    <select>
    <option value="January"<?php if ($row[month] == 'January') echo ' selected="selected"'; ?>>January</option>
    <option value="February"<?php if ($row[month] == 'February') echo ' selected="selected"'; ?>>February</option>
    ...
    ...
    <option value="December"<?php if ($row[month] == 'December') echo ' selected="selected"'; ?>>December</option>
</select>

    You can make this less repetitive by putting all the month names in an array and using a basic foreach over them.

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