{foreach},{foreachelse}
用于像访问序数数组一样访问关联数组
{foreach},{foreachelse}
 
{foreach} is used to loop over an associative array as well a numerically-indexed array, unlike {section} which is for looping over numerically-indexed arrays only. The syntax for {foreach} is much easier than {section}, but as a tradeoff it can only be used for a single array. Every {foreach} tag must be paired with a closing {/foreach} tag.
 
{foreach} 用于像循环访问一个数字索引数组一样循环访问一个关联数组，与仅能访问数字索引数组的{section}不同，{foreach}的语法比 {section}的语法简单得多，但是作为一个折衷方案也仅能用于单个数组。每个{foreach}标记必须与关闭标记{/foreach}成对出现。
Attribute Name
属性名称     Type
类型     Required
必要     Default
默认值     Description
描述
from     array     Yes必要     n/a     The array you are looping through
循环访问的数组
item     string     Yes必要     n/a     The name of the variable that is the current element
当前元素的变量名
key     string     No可选     n/a     The name of the variable that is the current key
当前键名的变量名
name     string     No可选     n/a     The name of the foreach loop for accessing foreach properties
用于访问foreach属性的foreach循环的名称
 
    Required attributes are from and item.
    from和item是必要属性
 
    The name of the {foreach} loop can be anything you like, made up of letters, numbers and underscores, like PHP variables.
    {foreach}循环的name可以是任何字母，数组，下划线的组合，参考PHP变量。
 
    {foreach} loops can be nested, and the nested {foreach} names must be unique from each other.
    {foreach}循环可以嵌套，嵌套的{foreach}的名称应当互不相同。
 
    The from attribute, usually an array of values, determines the number of times {foreach} will loop.
    from属性通常是值数组，被用于判断{foreach}的循环次数。
 
    {foreachelse} is executed when there are no values in the from variable.
    在from变量中没有值时，将执行{foreachelse}。
 
    {foreach} loops also have their own variables that handle properties. These are accessed with: {$smarty.foreach.name.property} with "name" being the name attribute.
 
    {foreach}循环也有自身属性的变量，可以通过{$smarty.foreach.name.property}访问，其中"name"是name属性。
 
        Note: The name attribute is only required when you want to access a {foreach} property, unlike {section}. Accessing a {foreach} property with name undefined does not throw an error, but leads to unpredictable results instead.
 
        注意：name属性仅在需要访问{foreach}属性时有效，与{section}不同。访问未定义name的{foreach}属性不会抛出一个错误，但将导致不可预知的结果。
 
    {foreach} properties are index, iteration, first, last, show, total.
    {foreach}属性有index, iteration, first, last, show, total.  
 
Example 7-7. {foreach} with associative item attribute
 
例 7-7. {foreach}的item属性是关联数组
 
 <?php
$items_list = array(
    23 => array('no' => 2456, 'label' => 'Salad'),
    96 => array('no' => 4889, 'label' => 'Cream')
);
$smarty->assign('items', $items_list);
?>   
  
 
Template to output $items with $myId in the url
 
模板中，url通过$myId输出$items
 
 
<ul>
{foreach from=$items key=myId item=i}
  <li><a href="http://blog.163.com/lgh_2002/blog/item.php?id={$myId}">{$i.no}: {$i.label}</li>
{/foreach}
</ul>
 
  
 
The above example will output:
 
上例将输出：
 
<ul>
  <li><a href="http://blog.163.com/lgh_2002/blog/item.php?id=23">2456: Salad</li>
  <li><a href="http://blog.163.com/lgh_2002/blog/item.php?id=96">4889: Cream</li>
</ul>
 
  
 
Example 7-8. {foreach} with nested item and key
 
例 7-8. {foreach}使用嵌套的item和key
 
Assign an array to Smarty, the key contains the key for each looped value.
 
向Smarty设置一个数组，对于每个键名对应的每个循环值都包括键。
 
 <?php
 $smarty->assign('contacts', array(
                             array('phone' => '1',
                                   'fax' => '2',
                                   'cell' => '3'),
                             array('phone' => '555-4444',
                                   'fax' => '555-3333',
                                   'cell' => '760-1234')
                             ));
?>
  
 
The template to output $contact.
 
用于输出$contact的模板。
 
 
<foreach name=outer item=contact from=$contacts}
  <hr />
  {foreach key=key item=item from=$contact}
    {$key}: {$item}<br />
  {/foreach}
{/foreach}
 
  
 
The above example will output:
 
上例将输出：
 
 
<hr />
  phone: 1<br />
  fax: 2<br />
  cell: 3<br />
<hr />
  phone: 555-4444<br />
  fax: 555-3333<br />
  cell: 760-1234<br />
 
  
.index
 
index contains the current array index, starting with zero.
 
.index包含当前数组索引，从零开始。
 {* 每五行输出一次头部区块 *}
<table>
{foreach from=$items key=myId item=i name=foo}
  {if $smarty.foreach.foo.index % 5 == 0}
     <tr><th>Title</th></tr>
  {/if}
  <tr><td>{$i.label}</td></tr>
{/foreach}
</table>                                                                                                                             
     
.iteration
 
iteration contains the current loop iteration and always starts at one, unlike index. It is incremented by one on each iteration.
 
iteration包含当前循环次数，与index不同，从1开始，每次循环增长1。
 {* 该例将输出0|1, 1|2, 2|3, ... 等等 *}
{foreach from=$myArray item=i name=foo}
{$smarty.foreach.foo.index}|{$smarty.foreach.foo
		

        
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