利用php+mcDropdown实现文件路径可在下拉框选择
最近用php进行文件目录信息读取,在网上弄到下面一段代码:
//获取指定目录下的文件列表
//$path 指定的目录,默认为当前目录
//$ifchild 是否显示子目录文件列表,默认不显示
//$curpath 显示当前的路径,默认为从当前目录开始;这个主要是为了显示确定href路径
复制代码 代码如下:
function openpath($path=".",$ifchild=false,$curpath=".")
{
$handle = opendir($path);
if($handle)
{
while(false !== ($file = readdir($handle)))
{
if ($file != "." && $file != "..")
{
$fullPath = $path.DIRECTORY_SEPARATOR.$file;
if(is_dir($fullPath))//如果是目录文件
{
if($ifchild)//如果设置了显示子目录
{
//递归
openpath($path.DIRECTORY_SEPARATOR.$file,$ifchild,$curpath.DIRECTORY_SEPARATOR.$file);
}
else
{
echo "
}
}
else if($file != basename(__FILE__))//排除当前执行脚本
{
echo "
}
else
{
echo $file;
}
}
}
}
closedir($handle);
}
因为自己要提供路径选择的功能,最好是有一个下拉菜单,里面有待选路径的显示,这样方便很多,于是自己改了改,把路径输出成一个无序列表。
下面是一个取得当前文件下所有子文件路径的代码:
复制代码 代码如下:
/*获取指定目录文件路径列表
*$path 指定的目录,默认为当前目录
*$ifchild 是否获取子目录文件列表,默认不获取
*$curpath 显示当前的路径,默认为从当前目录开始
*&$pach_html_srt 传递一个外部变量的引用进来,因为此方法有可能被递归调用,所以以这样的方式来保存
* 一些信息,也可以用全局变量来实现,在函数内部变量改变也影响到外部。
*&$path_ref_count 原理同上,一个计数标志,如果递归,计数器从上一次保存的值开始自增
*/
function openpath($path=".",$ifchild=false,&$path_html_str,&$path_ref_count)
{
$handle = opendir($path);
if($handle)
{
while(false !== ($file = readdir($handle)))
{
if ($file != "." && $file != "..")
{
$fullPath = $path.DIRECTORY_SEPARATOR.$file;
if(is_dir($fullPath))//如果文件是目录
{
$path_html_str.='
$path_html_str.=$file.'
- ';
if($ifchild)
{
//递归
openpath($path.DIRECTORY_SEPARATOR.$file,$ifchild,&$path_html_str,&$path_ref_count);
}
$path_html_str.='
}
}
}
}
closedir($handle);
}
有了上面的方法,我就可以在前台用jquery mcDropdown插件来让用户可以通过下拉菜单选择想进入的目录,所以需要封装成指定格式:
复制代码 代码如下:
$path_ref_count = 1;
$path_html_str ='';
openpath(".",true,&$path_html_str,&$path_ref_count);
$path_html_str = '
$path_html_str = str_replace ( "
这样我把$path_html_str传到前台,显示出来的就是一个符合mcDropdown要求的无序列表,就可以显示相应的待选列表了。
完整代码如下:
test.html
复制代码 代码如下:
Please select a category:
#categorymenu#
test.php
复制代码 代码如下:
//目录信息处理
$path_ref_count = 1;
$path_html_str ='';
openpath(".",true,&$path_html_str,&$path_ref_count);
$path_html_str = '
$path_html_str = str_replace ( "
//var_dump($path_info);
//var_dump($path_html_str);
$str_buffer = file_get_contents (dirname(__FILE__).DIRECTORY_SEPARATOR.'test.html');
$str_buffer = str_replace ( "#categorymenu#", $path_html_str, $str_buffer );
$str_buffer = str_replace ( "#delim#", DIRECTORY_SEPARATOR, $str_buffer );
echo $str_buffer;
/*获取指定目录文件路径列表
*$path 指定的目录,默认为当前目录
*$ifchild 是否获取子目录文件列表,默认不获取
*$curpath 显示当前的路径,默认为从当前目录开始
*&$pach_html_srt 传递一个外部变量的引用进来,因为此方法有可能被递归调用,所以以这样的方式来保存
* 一些信息,也可以用全局变量来实现,在函数内部变量改变也影响到外部。
*&$path_ref_count 原理同上,一个计数标志,如果递归,计数器从上一次保存的值开始自增
*/
function openpath($path=".",$ifchild=false,&$path_html_str,&$path_ref_count)
{
$handle = opendir($path);
if($handle)
{
while(false !== ($file = readdir($handle)))
{
if ($file != "." && $file != "..")
{
$fullPath = $path.DIRECTORY_SEPARATOR.$file;
if(is_dir($fullPath))//如果文件是目录
{
$path_html_str.='
$path_html_str.=$file.'
- ';
if($ifchild)
{
//递归
openpath($path.DIRECTORY_SEPARATOR.$file,$ifchild,&$path_html_str,&$path_ref_count);
}
$path_html_str.='
}
}
}
}
closedir($handle);
}
?>
jquery mcDropdown 插件可以在这里下载:http://www.givainc.com/labs/mcdropdown_jquery_plugin.htm

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