Html多选项目所选问题

Question

I have a form with multiple select items. I can select multiple items. But how do I select those items which I initially selected, if I wrongly input other fields of the form with PHP ?

<select name="interest[]" class="tr5" multiple="multiple">
<option value="">Select..</option>
<option value="art">Art</option>
<option value="litteratures">Litteratures</option>
<option value="business" >Business</option>    
<option value="internet" >Internet</option>    
</select>

I can do this without multiple tag with php.

<option value="internet" <?php if(isset($_POST['interest']) && $_POST['interest'] == 
"internet") echo 'selected = "selected"';?>>Internet</option>    

Thanks for your help.

Answer 1

You can do like this

<option value="internet" <?php if(isset($_POST['interest']) &&
in_array("internet",$_POST['interest'])) echo 'selected = "selected"';?>>Internet</option>