重复PHP readdir代码

也许这是个愚蠢的问题，但我自己没能解决

我有以下代码：

<?php
    $path = "galeria01";
    $dir_handle = @opendir($path) or die("Not found: $path");
    list_dir($dir_handle,$path);

    function list_dir($dir_handle,$path)
    {
        global $div;
        $div = 001;
        global $zindex;
        $zindex = 200;
        global $margem;
        $margem = 114;
        while ((($file = readdir($dir_handle)) !== false)) {
            if ($file != "." && $file != ".." ) {
                echo PHP_EOL . '<div id="';
                echo str_pad($div, 3, 0, STR_PAD_LEFT);
                echo '" style="position:absolute;left:';
                echo $margem;
                echo 'px;z-index:';
                echo $zindex;
                echo '"><img src="galeria01/';
                echo $file;
                echo '" width="675" height="450" /></div>';
                echo'<span class="clear"></span>';
                $div++;
                $zindex--;
                $margem = $margem - 675;
            }
        }
    }
    closedir($dir_handle);
?>

<div id="001" style="position:absolute;left:114px;z-index:200"><img src="001.jpg" width="675" height="450" /></div><span class="clear"></span>
<div id="002" style="position:absolute;left:-561px;z-index:199"><img src="002.jpg" width="675" height="450" /></div><span class="clear"></span>
<div id="003" style="position:absolute;left:-1236px;z-index:198"><img src="003.jpg" width="675" height="450" /></div><span class="clear"></span>
<div id="004" style="position:absolute;left:-1911px;z-index:197"><img src="004.jpg" width="675" height="450" /></div><span class="clear"></span></div>

如您所见，它读取文件夹中的所有文件，并生成以下代码：

<?php
    $path = "galeria01";
    $dir_handle = @opendir($path) or die("Not found: $path");
    list_dir($dir_handle,$path);

    function list_dir($dir_handle,$path)
    {
        global $div;
        $div = 001;
        global $zindex;
        $zindex = 200;
        global $margem;
        $margem = 114;
        while ((($file = readdir($dir_handle)) !== false)) {
            if ($file != "." && $file != ".." ) {
                echo PHP_EOL . '<div id="';
                echo str_pad($div, 3, 0, STR_PAD_LEFT);
                echo '" style="position:absolute;left:';
                echo $margem;
                echo 'px;z-index:';
                echo $zindex;
                echo '"><img src="galeria01/';
                echo $file;
                echo '" width="675" height="450" /></div>';
                echo'<span class="clear"></span>';
                $div++;
                $zindex--;
                $margem = $margem - 675;
            }
        }
    }
    closedir($dir_handle);
?>

<div id="001" style="position:absolute;left:114px;z-index:200"><img src="001.jpg" width="675" height="450" /></div><span class="clear"></span>
<div id="002" style="position:absolute;left:-561px;z-index:199"><img src="002.jpg" width="675" height="450" /></div><span class="clear"></span>
<div id="003" style="position:absolute;left:-1236px;z-index:198"><img src="003.jpg" width="675" height="450" /></div><span class="clear"></span>
<div id="004" style="position:absolute;left:-1911px;z-index:197"><img src="004.jpg" width="675" height="450" /></div><span class="clear"></span></div>

我只需要重新运行代码几次，并再次以相同的顺序生成所有这些DIV，但总是减少左边距和z索引值，如下所示：

    <div id="001" style="position:absolute;left:114px;z-index:200"><img src="001.jpg" width="675" height="450" /></div><span class="clear"></span>
                     (...)
    <div id="004" style="position:absolute;left:-1911px;z-index:197"><img src="004.jpg" width="675" height="450" /></div><span class="clear"></span></div>
    <div id="001" style="position:absolute;left:-2586px;z-index:196"><img src="001.jpg" width="675" height="450" /></div><span class="clear"></span>
                     (...)

(...)
(...)

我该怎么做

我希望它很简单，你能帮助我

---

谢谢。

要重新运行代码，您可以再次执行代码

除此之外，您还需要将当前全局变量初始化从函数中移动到全局范围，以允许在代码的其他重新运行时修改它们

以下是您的修改代码和一些注释：

<?php
$path = ".";
$dir_handle = @opendir($path) or die("Not found: $path");

// do the init of these variables outside of the function and before the first call
global $zindex;
$zindex = 200;
global $margem;
$margem = 114;

// now call your function, it will behave like your original code
list_dir($dir_handle,$path);

// now call the your function again, it will pick up with the zindex/margem values of the last div you printed
list_dir($dir_handle,$path);

function list_dir($dir_handle,$path)
{
    global $div;
    $div = 001;
    global $zindex;
    // no longer set a new value for the zindex with each function call
    //$zindex = 200;
    global $margem;
    // no longer set a new value for the margem with each function call
    //$margem = 114;
    //reset the directory handle to the first position
    rewinddir($dir_handle);
    while ((($file = readdir($dir_handle)) !== false)) {
        if ($file != "." && $file != ".." ) {
            echo PHP_EOL . '<div id="';
            echo str_pad($div, 3, 0, STR_PAD_LEFT);
            echo '" style="position:absolute;left:';
            echo $margem;
            echo 'px;z-index:';
            echo $zindex;
            echo '"><img src="galeria01/';
            echo $file;
            echo '" width="675" height="450" /></div>';
            echo'<span class="clear"></span>';
            $div++;
            $zindex--;
            $margem = $margem - 675;
        }
    }
}
closedir($dir_handle);
?>

不，这毫无意义。“从1到4而不是从1到4”？嗯？（HTML id值不能以数字开头。）对于这样的事情，我通常会打电话给我的朋友。同意，你的问题毫无意义。。。也许你应该先把问题孤立起来，简化问题：hakre说了什么。那么，如果我知道您希望能够多次使用此函数，但使用不同的边距和z索引？那么，为什么不在函数中添加一个基本边距和一个基本z索引呢？不能有多个ID相同的元素。请使用类。我能够理解您的想法，完全按照您所说的做了，但遗憾的是，输出只列出了一次文件，就像以前一样。不管我调用函数多少次，它在HTML上只列出一次。这是因为dir_句柄在第一次函数调用结束后指向末尾。我修改了我的答案，在读取目录内容之前使用rewinddir（），因此始终从一开始就读取完整的目录树