使用for循环创建子目录

Question

 $product_Category = ' Electronics| Computers & Accessories| Monitors ';   

<!-- a simple div with some links --> 
    <div class="breadcrumb-killer flat">
        <a href="index.php" class="active">Home</a>
        <?php 
        $cats = explode("|",  $product_Category);
        for($k = 0; $k < count($cats); $k++) {
            for ($l=0; $l <= $k; $l++) { 
                $folder = permalink($cats[$l])."/" ;
                echo $folder;
            }

            echo '<a href="'.$folder.'">'.$cats[$k].'</a>';
        } 
        ?>
    </div>

我有用分隔符分隔的类别，如- Electronics| Computers & Accessories| Monitor

我正在使用此函数创建干净的urls

function permalink($var)
{
    $var = preg_replace('#([\W_]+)#', ' ', $var);
    $var = str_replace(' ', '-', $var);
    $var = strtolower($var);
    $var = rtrim($var, '-');
    $var = ltrim($var, '-'); 
    $var = trim($var);
    return $var;
}

当我输出文件夹时，我得到了这个：

electronics/  electronics/computers-accessories/ electronics/computers-accessories/monitors/

虽然urs不是我想要的构造方式。我希望urls是这样的：

<a href="electronics/">Electronics</a>
<a href="electronics/computers-accessories/">Computers & Accessories</a>
<a href="electronics/computers-accessories/monitors/">Monitors</a>

这就是我所得到的：

    <a href="electronics/">Electronics</a>
    <a href="computers-accessories/"> Computers &amp; Accessories</a>
    <a href="monitors/"> Monitors</a>

Answer 1

我刚刚意识到我的错误--内部的for循环是将不同的部分添加在一起，但它并不是添加它们只是替换它们，你需要重置它并使用.=添加每个片段……

    $folder = "";
    for ($l=0; $l <= $k; $l++) { 
        $folder .= permalink($cats[$l])."/" ;
        // echo $folder;
    }