php建立菜单

对于使用过C/S的人来说，通过菜单选择功能是最基本的操作，在php中，也很容易实现菜单的功能，方法如下：

menu.php:

<?php

//

// 作者: christine

// email: [email protected]

//

class menu {

var $name;

var $items;

var $open;

var $closed;

var $indent;

function menu($name,$open = '(-)',$closed = '(+)',$indent = ' ')

{

$this->items = array();

$this->name = $name;

$this->open = $open;

$this->closed = $closed;

$this->indent = $indent;

}

function add($name, $href="" , $target = "")

{

$n = count($this->items);

if (is_object($name))

{

$this->items[$n] = $name;

}

else

{

$this->items[$n]['name'] = $name;

$this->items[$n]['href'] = $href;

$this->items[$n]['target'] = $target;

}

}

function show($nest = 0)

{

$urlname = strtr($this->name, ' ', '_');

$indent = ';

global $$urlname;

global $PHP_SELF;

global $QUERY_STRING;

if ($nest)

{

$indent = str_repeat($this->indent, $nest);

}

if (isset($urlname))

{

printf('%s<a href="%s?%s">%s</a><br>',

$indent . $this->open,

$PHP_SELF,

ereg_replace("{$urlname}=&",', $QUERY_STRING),

$this->name);

echo "n";

while (list(,$item) = each($this->items))

{

if (is_object($item))

{

$item->show($nest + 1);

}

else

{

printf('%s<a href="%s"%s>%s</a><br>',

$indent . $this->indent,

$item['href'],

(!empty($item['target']) ? ' target="'.$item['target'].'"':'),$item['name']);

echo "n";

}

}

}

else

{

printf('%s<a href="%s?%s=&%s">%s</a><br>',

$indent . $this->closed,

$PHP_SELF,

$urlname, $QUERY_STRING,

$this->name);

echo "n";

}

}

}

?>

menu2.php:

<?php

include('menu.php');

$submenu = new menu('Sub Menu');

$submenu->add('Sub Item 1', 'vote.php3', '_new');

$submenu->add('Sub Item 2', 'vote.php3');

$main = new menu('Main');

$main->add('Main Item 1', 'vote.php3?');

$main->add('Main Item 2', 'vote.php3');

$main->add($submenu);

$main->add('Main Item 3', 'vote.php3');

$second = new menu('Secondary Menu');

$second->add('Secondary Item 1', 'vote.php3');

$second->add('Secondary Item 2', 'vote.php3');

$main->show();

//$second->show();

?>

执行menu2.php就可看到菜单效果。
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