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{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。
循环访问的数组
当前元素的变量名
当前键名的变量名
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
- {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:
{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
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
- {foreach}属性有index, iteration, first, last, show, total.
Example 7-5. The item attribute
例 7-5. item属性
<?php
$arr = array(1000, 1001, 1002);
$smarty->assign('myArray', $arr);
?> Template to output $myArray in an un-ordered list
用模板以无序列表输出$myArray
<ul>
{foreach from=$myArray item=foo}
<li>{$foo}</li>
{/foreach}
</ul>
The above example will output:
上例将输出：
<ul>
<li>1000</li>
<li>1001</li>
<li>1002</li>
</ul>
Example 7-6. Demonstrates the item and key attributes
例 7-6. 演示item和key属性
<?php
$arr = array(9 => 'Tennis', 3 => 'Swimming', 8 => 'Coding');
$smarty->assign('myArray', $arr);
?> Template to output $myArray as key/val pair, like PHP's
用模板按键名/键值对的形式输出$myArray, 类似于PHP的foreach。
<ul>
{foreach from=$myArray key=k item=v}
<li>{$k}: {$v}</li>
{/foreach}
</ul>
The above example will output:
上例将输出：
<ul>
<li>9: Tennis</li>
<li>3: Swimming</li>
<li>8: Coding</li>
</ul>
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="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="item.php?id=23">2456: Salad</li>
<li><a href="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 />
Example 7-9. Database example with {foreachelse}
例 7-9. 使用{foreachelse}的数据库示例
A database (eg PEAR or ADODB) example of a search script, the query results assigned to Smarty
一个数据库（例如PEAR或ADODB）的搜索脚本示例，
<?php
$search_condition = "where name like '$foo%' ";
$sql = 'select contact_id, name, nick from contacts '.$search_condition.' order by name';
$smarty->assign('results', $db->getAssoc($sql) );
?> The template which display "None found" if no results with {foreachelse}.
借助{foreachelse}标记在没有结果时模板输出"None found"字样。
{foreach key=cid item=con from=$results}
<a href="contact.php?contact_id={$cid}">{$con.name} - {$con.nick}</a><br />
{foreachelse}
No items were found in the search
{/foreach}.index
index contains the current array index, starting with zero.
.index包含当前数组索引，从零开始。
Example 7-10. index example
例 7-10. index示例
{* The header block is output every five rows *}
{* 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
iteration包含当前循环次数，与index不同，从1开始，每次循环增长1。
Example 7-11. iteration and index example
例 7-11. iteration和index示例
{* this will output 0|1, 1|2, 2|3, ... etc *}
{* 该例将输出0|1, 1|2, 2|3, ... 等等 *}
{foreach from=$myArray item=i name=foo}
{$smarty.foreach.foo.index}|{$smarty.foreach.foo.iteration},
{/foreach} .first
first is TRUE if the current {foreach} iteration is the initial one.
first在当前{foreach}循环处于初始位置时值为TRUE。
Example 7-12. first property example
例 7-12. first属性示例
{* show LATEST on the first item, otherwise the id *}
{* 对于第一个条目显示LATEST而不是id *}
<table>
{foreach from=$items key=myId item=i name=foo}
<tr>
<td>{if $smarty.foreach.foo.first}LATEST{else}{$myId}{/if}</td>
<td>{$i.label}</td>
</tr>
{/foreach}
</table> .last
last is set to TRUE if the current {foreach} iteration is the final one.
last在当前{foreach}循环处于最终位置是值为TRUE。
Example 7-13. last property example
例 7-13. last属性示例
{* Add horizontal rule at end of list *}
{* 在列表结束时增加一个水平标记 *})
{foreach from=$items key=part_id item=prod name=products}
<a href="#{$part_id}">{$prod}</a>{if $smarty.foreach.products.last}<hr>{else},{/if}
{foreachelse}
... content ...
{/foreach} .show
show is used as a parameter to {foreach}. show is a boolean value. If FALSE, the {foreach} will not be displayed. If there is a {foreachelse} present, that will be alternately displayed.
show是{foreach}的参数. show是一个布尔值。如果值为FALSE，{foreach}将不被显示。如果有对应的{foreachelse}，将被显示。
.total
total contains the number of iterations that this {foreach} will loop. This can be used inside or after the {foreach}.
total包括{foreach}将循环的次数，既可以在{foreach}中使用，也可以在之后使用。
Example 7-14. total property example
例 7-14. total属性示例
{* show rows returned at end *}
{* 在结束位置显示行数 *}
{foreach from=$items key=part_id item=prod name=foo}
{$prod.name><hr/>
{if $smarty.foreach.foo.last}
<div id="total">{$smarty.foreach.foo.total} items</div>
{/if}
{foreachelse}
... something else ...
{/foreach} See also
参考{section}和$smarty.foreach。
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