I have a form which is displayed when there is some editing is required in data. This form contains the multiple s开发者_StackOverflow社区elect box field i.e.,
<select name="multiple" multiple>
<option value="1">asd</option>
<option value="2">asaad</option>
<option value="3">aslan</option>
</select>
Now when i come to this form, I get every existing values populated in their respective fields but i do not get this multiple select box populated. In db the its respective values are stored in csv format like, 2,3,4
.
Now how Can i use these csv and repopulate the multiple select box respective of the csv.?
<?
$csvString = "1,3";
?>
<select name="multiple" multiple>
<option value="1" <?=strpos($csvString ,'1')!== false?'selected="selected"':''?> >Option 1</option>
<option value="2" <?=strpos($csvString ,'2')!== false?'selected="selected"':''?> >Option 2</option>
<option value="3" <?=strpos($csvString ,'3')!== false?'selected="selected"':''?> >Option 3</option>
</select>
I assume you generate HTML for selectbox iterating over the $options
. Then you just have to check in each iteration if the current value is present in you $csv
and add the selected
parameter to the option.
$selection = explode(',', $csv);
foreach ($options as $value => $name) {
$selected = in_array($value, $selection) ? ' selected="selected"' : '';
echo '<option value="'. $value .'"'. $selected .'>'. $name .'</option>';
}
This may help but there is probably a better way...
$csvString = "1,3";
$options = explode(",", $csvString);
foreach($options as $val) {
${"opt".$val} = "selected=\"selected\"";
}
?>
<select ...>
<option value="1" <?php echo $opt1 ?> >Option 1</option>
<option value="2" <?php echo $opt2 ?> >Option 2</option>
<option value="3" <?php echo $opt3 ?> >Option 3</option>
</select>
精彩评论