Html多选项目所选问题

问题描述：

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.

我有一个包含多个选择项的表单。我可以选择多个项目。但是，如果我错误地使用PHP输入表单的其他字段，如何选择我最初选择的那些项？ p>

 ＆lt; select name =“interest []”class =  “tr5”multiple =“multiple”＆gt; 
＆lt; option value =“”＆gt;选择..＆lt; / option＆gt; 
＆lt; option value =“art”＆gt; Art＆lt; / option＆gt; 
＆lt; option value =  “litteratures”＆gt; Litteratures＆lt; / option＆gt; 
＆lt; option value =“business”＆gt; Business＆lt; / option＆gt;  
＆lt; option value =“internet”＆gt; Internet＆lt; / option＆gt;  
＆lt; / select＆gt; 
  code>  pre> 
 
 我可以在不使用php的多个标记 strong>的情况下执行此操作。   p> 
 
 
 ＆lt; option value =“internet”＆lt;？php if（isset（$ _ POST ['interest']）＆amp;＆amp; $ _POST ['interest'] =  = 
“internet”）echo'selected =“selected”';？＆gt;＆gt; Internet＆lt; / option＆gt;  
  code>  pre> 
 
 感谢您的帮助。   p> 
  div>

答

You can do like this

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

Html多选项目所选问题

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