如何在PHP的列表框中保持价值？

问题描述：

I got a listbox in my php page that generate from another listbox, the code is as follows

<?php $myArray1 = $_POST['countryRF'];?>
                    <select name='countryRF[]' id='countryRF' size='10' multiple style='width:180px' class='selfont'>
                    <?php
                    foreach($myArray1 as $value){ // Loop through each element
                          print "<option value=\"".$value."\">".$value."</option>";
                    }
                    ?>
                    </option></select>

While refreshing the form listbox get empty, how can I keep added values even after form reload ?

Is it possible to keep the mysql result table stable even after form reloading by session ? If so please give me a help ?

我的php页面中有一个列表框，从另一个列表框生成，代码如下 p> \ n

 ＆lt;？php $ myArray1 = $ _POST ['countryRF'];？＆gt; 
＆lt; select name ='countryRF []'id ='countryRF'size ='10'倍数 style ='width：180px'class ='selfont'＆gt; 
＆lt;？php 
 foreach（$ myArray1 as $ value）{//遍历每个元素
 print“＆lt; option value = \”“。  $ value。“\”＆gt;“。$ value。”＆lt; / option＆gt;“; 
} 
？＆gt; 
＆lt; / option＆gt;＆lt; / select＆gt; 
  code>  pre  > 
 
 刷新表单列表框时，如果表单重新加载后如何保留添加值？ p> 
 
 
 是否可以保留mysql结果表 即使在会议重新加载后仍然稳定？ 如果是这样，请给我一个帮助？ strong>  p> 
  div>

答

i see you get the 'countryRF' from post.

you can store it in a cookie/session, of store it on the server.

use

if (isset($_POST['countryRF'])) {
    $_COOKIE['countryRF'] = $_POST['countryRF'];
}
$myArray = $_COOKIE['countryRF'];

same goes with session

答

save them into Sessions

如何在PHP的列表框中保持价值？

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