简单的动态面包屑

时间：2010-04-07 16:36:15

标签： php dynamic breadcrumbs

我认为这个剧本对这里的任何菜鸟都很感兴趣:)包括我:)

我想要创建的是一个可以在任何文件中使用的小代码，并会生成这样的面包屑：

如果文件名为“ website.com/templates/index.php ”，则面包屑应显示：

Website.com > Templates

^^链接^^纯文本

如果文件名为“ website.com/templates/template_some_name.php ”，则面包屑应显示：

Website.com > Templates > Template Some Name

^^链接^^链接^^纯文本

11 个答案:

答案 0 :(得分：41)

对于简单的面包屑来说，这可能有点过头了，但值得一试。我记得很久以前我刚开始这个问题，但我从未真正解决过这个问题。也就是说，直到我决定现在写这个。 ：）

我已经记录了最好的内联，最底层是3个可能的用例。请享用！ （随时问你可能有任何问题）

<?php

// This function will take $_SERVER['REQUEST_URI'] and build a breadcrumb based on the user's current path
function breadcrumbs($separator = ' &raquo; ', $home = 'Home') {
    // This gets the REQUEST_URI (/path/to/file.php), splits the string (using '/') into an array, and then filters out any empty values
    $path = array_filter(explode('/', parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH)));

    // This will build our "base URL" ... Also accounts for HTTPS :)
    $base = ($_SERVER['HTTPS'] ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'] . '/';

    // Initialize a temporary array with our breadcrumbs. (starting with our home page, which I'm assuming will be the base URL)
    $breadcrumbs = Array("<a href=\"$base\">$home</a>");

    // Find out the index for the last value in our path array
    $last = end(array_keys($path));

    // Build the rest of the breadcrumbs
    foreach ($path AS $x => $crumb) {
        // Our "title" is the text that will be displayed (strip out .php and turn '_' into a space)
        $title = ucwords(str_replace(Array('.php', '_'), Array('', ' '), $crumb));

        // If we are not on the last index, then display an <a> tag
        if ($x != $last)
            $breadcrumbs[] = "<a href=\"$base$crumb\">$title</a>";
        // Otherwise, just display the title (minus)
        else
            $breadcrumbs[] = $title;
    }

    // Build our temporary array (pieces of bread) into one big string :)
    return implode($separator, $breadcrumbs);
}

?>

<p><?= breadcrumbs() ?></p>
<p><?= breadcrumbs(' > ') ?></p>
<p><?= breadcrumbs(' ^^ ', 'Index') ?></p>

答案 1 :(得分：26)

嗯，从您给出的示例看起来像“$ _SERVER ['REQUEST_URI']”并且explode()函数可以帮助您。您可以使用explode将域名后面的URL拆分为数组，并在每个正斜杠上将其分开。

作为一个非常基本的例子，可以实现类似的东西：

$crumbs = explode("/",$_SERVER["REQUEST_URI"]);
foreach($crumbs as $crumb){
    echo ucfirst(str_replace(array(".php","_"),array(""," "),$crumb) . ' ');
}

答案 2 :(得分：6)

还使用RDFa创建了一个小脚本（您也可以使用微数据或其他格式）Check it out on google 此脚本还会记住您的网站结构。

function breadcrumbs($text = 'You are here: ', $sep = ' &raquo; ', $home = 'Home') {
//Use RDFa breadcrumb, can also be used for microformats etc.
$bc     =   '<div xmlns:v="http://rdf.data-vocabulary.org/#" id="crums">'.$text;
//Get the website:
$site   =   'http://'.$_SERVER['HTTP_HOST'];
//Get all vars en skip the empty ones
$crumbs =   array_filter( explode("/",$_SERVER["REQUEST_URI"]) );
//Create the home breadcrumb
$bc    .=   '<span typeof="v:Breadcrumb"><a href="'.$site.'" rel="v:url" property="v:title">'.$home.'</a>'.$sep.'</span>'; 
//Count all not empty breadcrumbs
$nm     =   count($crumbs);
$i      =   1;
//Loop the crumbs
foreach($crumbs as $crumb){
    //Make the link look nice
    $link    =  ucfirst( str_replace( array(".php","-","_"), array(""," "," ") ,$crumb) );
    //Loose the last seperator
    $sep     =  $i==$nm?'':$sep;
    //Add crumbs to the root
    $site   .=  '/'.$crumb;
    //Make the next crumb
    $bc     .=  '<span typeof="v:Breadcrumb"><a href="'.$site.'" rel="v:url" property="v:title">'.$link.'</a>'.$sep.'</span>';
    $i++;
}
$bc .=  '</div>';
//Return the result
return $bc;}

答案 3 :(得分：3)

使用parse_url，然后在循环中输出结果：

$urlinfo = parse_url($the_url);
echo makelink($urlinfo['hostname']);
foreach($breadcrumb in $urlinfo['path']) {
  echo makelink($breadcrumb);
}

function makelink($str) {
  return '<a href="'.urlencode($str).'" title="'.htmlspecialchars($str).'">'.htmlspecialchars($str).'</a>';
}

（伪代码）

答案 4 :(得分：3)

我从Dominic Barnes的代码开始，收集了来自cWoDeR的反馈，当我使用子目录时，我仍然遇到第三级的面包屑问题。所以我重写了它并包含了下面的代码。

请注意，我已经设置了我的网站结构，以便从根级别的页面从属（从中链接）的页面设置如下：

  • 创建一个与文件名称完全相同的文件夹（包括大小写），减去后缀，作为根级别的文件夹

  • 将所有下级文件/页放入此文件夹

（例如，如果想要Customers.php：

的sobordinate页面

  • 创建一个名为Customers的文件夹，与Customers.php

    • 处于同一级别

  • 将一个index.php文件添加到Customers文件夹中，该文件夹重定向到该文件夹​​的调用页面（参见下面的代码）

此结构适用于多个子文件夹级别。

请确保遵循上述文件结构并插入index.php文件，其中包含每个子文件夹中显示的代码。

每个子文件夹的index.php页面中的代码如下所示：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Redirected</title>
</head>
<body>
<?php 
$root_dir = "web_root/" ;
$last_dir=array_slice(array_filter(explode('/',$_SERVER['PHP_SELF'])),-2,1,false) ;
$path_to_redirect = "/".$root_dir.$last_dir[0].".php" ; 
header('Location: '.$path_to_redirect) ; 
?>
</body>
</html>

如果您使用服务器的根目录作为您的Web根目录（即/ var / www / html），则设置$ root_dir =“”:(不要留下尾随的“/”）。如果您使用网站的子目录（即/ var / www / html / web_root，则设置$ root_dir =“web_root /”;（将web_root替换为您的Web目录的实际名称）（确保包含尾随/）

无论如何，这是我的（衍生）代码：

<?php

// Big Thank You to the folks on StackOverflow
// See http://stackoverflow.com/questions/2594211/php-simple-dynamic-breadcrumb
// Edited to enable using subdirectories to /var/www/html as root
// eg, using /var/www/html/<this folder> as the root directory for this web site
// To enable this, enter the name of the subdirectory being used as web root
// in the $directory2 variable below
// Make sure to include the trailing "/" at the end of the directory name
// eg use      $directory2="this_folder/" ;
// do NOT use  $directory2="this_folder" ;
// If you actually ARE using /var/www/html as the root directory,
// just set $directory2 = "" (blank)
// with NO trailing "/"

// This function will take $_SERVER['REQUEST_URI'] and build a breadcrumb based on the user's current path
function breadcrumbs($separator = ' &raquo; ' , $home = 'Home') 
{

    // This sets the subdirectory as web_root (If you want to use a subdirectory)
    // If you do not use a web_root subdirectory, set $directory2=""; (NO trailing /)
    $directory2 = "web_root/" ;

    // This gets the REQUEST_URI (/path/to/file.php), splits the string (using '/') into an array, and then filters out any empty values
    $path = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH) ;
    $path_array = array_filter(explode('/',$path)) ;

    // This line of code accommodates using a subfolder (/var/www/html/<this folder>) as root
    // This removes the first item in the array path so it doesn't repeat
    if ($directory2 != "")
    {
    array_shift($path_array) ;
    }

    // This will build our "base URL" ... Also accounts for HTTPS :)
    $base = ($_SERVER['HTTPS'] ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'] . '/'. $directory2 ;

    // Initialize a temporary array with our breadcrumbs. (starting with our home page, which I'm assuming will be the base URL)
    $breadcrumbs = Array("<a href=\"$base\">$home</a>") ;

    // Get the index for the last value in our path array
    $last = end($path_array) ;

    // Initialize the counter
    $crumb_counter = 2 ;

    // Build the rest of the breadcrumbs
    foreach ($path_array as $crumb) 
    {
        // Our "title" is the text that will be displayed representing the filename without the .suffix
        // If there is no "." in the crumb, it is a directory
        if (strpos($crumb,".") == false)
        {
            $title = $crumb ;
        }
        else
        {
            $title = substr($crumb,0,strpos($crumb,".")) ;
        }

        // If we are not on the last index, then create a hyperlink
        if ($crumb != $last)
        {
            $calling_page_array = array_slice(array_values(array_filter(explode('/',$path))),0,$crumb_counter,false) ;
            $calling_page_path = "/".implode('/',$calling_page_array).".php" ;
            $breadcrumbs[] = "<a href=".$calling_page_path.">".$title."</a>" ;
        }

        // Otherwise, just display the title
        else
        {
            $breadcrumbs[] = $title ;
        }

        $crumb_counter = $crumb_counter + 1 ;

    }
    // Build our temporary array (pieces of bread) into one big string :)
    return implode($separator, $breadcrumbs) ;
}

// <p><?= breadcrumbs() ? ></p>
// <p><?= breadcrumbs(' > ') ? ></p>
// <p><?= breadcrumbs(' ^^ ', 'Index') ? ></p>
?>

答案 5 :(得分：2)

嘿，你的答案很好，但是如果你有一个类似http://localhost/project/index.php的网站，那么'项目'链接会重复，因为它是$ base的一部分，也出现在$ path数组中。所以我调整并删除了$ path数组中的第一项。 

//Trying to remove the first item in the array path so it doesn't repeat
array_shift($path);

我不知道这是否是最优雅的方式，但它现在适用于我。

我在第13行或之前添加了这个代码

// Find out the index for the last value in our path array
$last = end(array_keys($path));

答案 6 :(得分：2)

这是一个非常简单的动态面包屑（根据需要进行调整）：

    <?php 
    $docroot = "/zen/index5.php";
    $path =($_SERVER['REQUEST_URI']);
    $names = explode("/", $path); 
    $trimnames = array_slice($names, 1, -1);
    $length = count($trimnames)-1;
    $fixme = array(".php","-","myname");
    $fixes = array(""," ","My<strong>Name</strong>");
    echo '<div id="breadwrap"><ol id="breadcrumb">';
    $url = "";
    for ($i = 0; $i <= $length;$i++){
    $url .= $trimnames[$i]."/";
        if($i>0 && $i!=$length){
            echo '<li><a href="/'.$url.'">'.ucfirst(str_replace($fixme,$fixes,$trimnames[$i]) . ' ').'</a></li>';
    }
    elseif ($i == $length){
        echo '<li class="current">'.ucfirst(str_replace($fixme,$fixes,$trimnames[$i]) . ' ').'</li>';       
    }
    else{
        echo $trimnames[$i]='<li><a href='.$docroot.' id="bread-home"><span>&nbsp;</span></a></li>';
    }
}
echo '</ol>';
?>

答案 7 :(得分：1)

这是我基于怀疑论者答案的解决方案。它从WordPress DB获取页面标题，而不是从URL获取页面标题，因为拉丁字符存在问题（slug没有拉丁字符）。您还可以选择显示或不显示“主页”项目。

/**
 * Show Breadcrumbs
 * 
 * @param string|bool $home
 * @param string $class
 * @return string
 * 
 * Using: echo breadcrumbs();
 */
function breadcrumbs($home = 'Home', $class = 'items') {
    $breadcrumb  = '<ul class="'. $class .'">';
    $breadcrumbs = array_filter(explode('/', parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH)));

    if ($home) {
        $breadcrumb .= '<li><a href="' . get_site_url() . '">' . $home . '</a></li>';
    }

    $path = '';
    foreach ($breadcrumbs as $crumb) {
        $path .=  $crumb . '/';
        $page = get_page_by_path($path);

        if ($home && ($page->ID == get_option('page_on_front'))) {
            continue;
        }

        $breadcrumb .= '<li><a href="'. get_permalink($page) .'">' . $page->post_title . '</a></li>';
    }

    $breadcrumb .= '</ul>';
    return $breadcrumb;
}

使用：

<div class="breadcrumb">
    <div class="container">
        <h3 class="breadcrumb__title">Jazda na maxa!</h3>
        <?php echo breadcrumbs('Start', 'breadcrumb__items'); ?>
    </div>
</div>

答案 8 :(得分：0)

使用explode()函数的更好的函数如下...

不要忘记在超链接href中替换您的网址变量。

<?php 
    if($url != ''){
        $b = '';
        $links = explode('/',rtrim($url,'/'));
        foreach($links as $l){
            $b .= $l;
            if($url == $b){
                echo $l;
            }else{
                echo "<a href='URL?url=".$b."'>".$l."/</a>";
            }
            $b .= '/';
         }
     }
?>

答案 9 :(得分：0)

这是我个人在网站中使用的代码。开箱即用。

<?php
function breadcrumbs($home = 'Home') {
  global $page_title; //global varable that takes it's value from the page that breadcrubs will appear on. Can be deleted if you wish, but if you delete it, delete also the title tage inside the <li> tag inside the foreach loop.
    $breadcrumb  = '<div class="breadcrumb-container"><div class="container"><ol class="breadcrumb">';
    $root_domain = ($_SERVER['HTTPS'] ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'].'/';
    $breadcrumbs = array_filter(explode('/', parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH)));
    $breadcrumb .= '<li><i class="fa fa-home"></i><a href="' . $root_domain . '" title="Home Page"><span>' . $home . '</span></a></li>';
    foreach ($breadcrumbs as $crumb) {
        $link = ucwords(str_replace(array(".php","-","_"), array(""," "," "), $crumb));
        $root_domain .=  $crumb . '/';
        $breadcrumb .= '<li><a href="'. $root_domain .'" title="'.$page_title.'"><span>' . $link . '</span></a></li>';
    }
    $breadcrumb .= '</ol>';
    $breadcrumb .= '</div>';
    $breadcrumb .= '</div>';
    return $breadcrumb;
}
echo breadcrumbs();
?>

css： 

.breadcrumb-container {
    width: 100%;
    background-color: #f8f8f8;
    border-bottom-color: 1px solid #f4f4f4;
    list-style: none;
    margin-top: 72px;
    min-height: 25px;
    box-shadow: 0 3px 0 rgba(60, 57, 57, .2)
}

.breadcrumb-container li {
    display: inline
}
.breadcrumb {
    font-size: 12px;
    padding-top: 3px
}
.breadcrumb>li:last-child:after {
    content: none
}

.breadcrumb>li:last-child {
    font-weight: 700;
    font-style: italic
}
.breadcrumb>li>i {
    margin-right: 3px
}

.breadcrumb>li:after {
    font-family: FontAwesome;
    content: "\f101";
    font-size: 11px;
    margin-left: 3px;
    margin-right: 3px
}
.breadcrumb>li+li:before {
    font-size: 11px;
    padding-left: 3px
}

随意使用css的填充和边距，直到为自己的网站找到合适的位置为止。

答案 10 :(得分：0)

function  makeBreadCrumbs($separator = '/'){
        //extract uri path parts into an array
        $breadcrumbs =  array_filter(explode('/',parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH)));

        //determine the base url or domain 
        $base = (isset($_SERVER['HTTPS'])  ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'] . '/';

        $last  =  end($breadcrumbs); //obtain the last piece of the path parts
        $crumbs['Home'] = $base; //Our first crumb is the base url 
        $current =  $crumbs['Home']; //set the current breadcrumb to base url

    //create valid urls from the breadcrumbs and store them in an array
    foreach ($breadcrumbs as $key => $piece) {

    //ignore file names and create urls from  directory path
    if( strstr($last,'.php') == false){
        $current   =  $current.$separator.$piece;
        $crumbs[$piece] =$current;

    }else{

        if($piece !== $last){
            $current   =  $current.$separator.$piece;
            $crumbs[$piece] =$current;
        }
    }

    }


    $links = '';
    $count = 0;

//create html tags for displaying the breadcrumbs
foreach ($crumbs as $key => $value) :
    $x = array_filter(explode('/',parse_url($value, PHP_URL_PATH)));
    $last =  end($x);
    //this will add a class to the last link to control its appearance
    $clas = ($count === count($crumbs) -1 ? ' current-crumb' : '' );

    //determine where to print separators 
    $sep = ( $count > -1 && $count < count($crumbs) -1 ? '&raquo;' :'');

    $links .= "<a class=\"$clas\" href=\"$value\">$key</a> $sep";
    $count++;

endforeach;

return $links;

}

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