smarty的foreach使用详解

讲如何使用smarty foreach使用 如：{foreach from=$myArray item=foo}

{$foo}

{/foreach}循环$myArray数组，打印值{$foo}出来

Attribute Name属性名称
Type类型
Required必要
Default默认值
Description描述

from
array数组
Yes必要
n/a
The array you are looping through
循环访问的数组

item
string字符串
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字符串
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字符
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

例 7-5. item属性

$arr = array("http://www.phpzy.com", "www.phpzy.com", "绿色php资源");   
$smarty->assign('myArray', $arr);   
?>  

Template to output $myArray in an un-ordered list

用模板以无序列表输出$myArray

   
{foreach from=$myArray item=foo}    
{$foo}
   
{/foreach}   
 

The above example will output:

上例将输出：

       
php资源
       
绿色php资源
    
 

Example 7-6. Demonstrates the item and key attributes

例 7-6. 演示item和key属性

$arr = array(9 => 'T', 3 => 'Swimming', 8 => 'Coding');
$smarty->assign('myArray', $arr);
?>

Template to output $myArray as key/val pair, like PHP's foreach.

用模板按键名/键值对的形式输出$myArray, 类似于PHP的foreach。

  
{foreach from=$myArray kkey=k item=v}      
{$k}: {$v}
  
{/foreach}   
 

The above example will output:

上例将输出：

       
9: Tennis
       
3: Swimming
       
8: Coding
  
 

Example 7-7. {foreach} with associative item attribute

例 7-7. {foreach}的item属性是关联数组

$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

   
{foreach from=$items key=myId item=i}     
绿色php资源{$i.no}: {$i.label}
   
{/foreach}   
 

The above example will output:

上例将输出：

     
绿色php资源
     
4889: Cream
  
 

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。

$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=$contacts}      
{foreach key=key item=item from=$contact}       
{$key}: {$item}   
{/foreach}   
{/foreach} 

The above example will output:

上例将输出：

     
phone: 1   
fax: 2   
cell: 3
  
phone: 555-4444
    
fax: 555-3333   
cell: 760-1234 

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，

  $search_condition = "where name like '$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}      
   
{$con.name} - {$con.nick}
  
{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 *}



{foreach from=$items key=myId item=i name=foo}
  {if $smarty.foreach.foo.index % 5 == 0}
    
  {/if}
 
{/foreach}


Title

{$i.label}

.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。

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 *}



{foreach from=$items key=myId item=i name=foo}

 
 

{/foreach}


{if $smarty.foreach.foo.first}LATEST{else}{$myId}{/if}

{$i.label}

.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=$items key=part_id item=prod name=products}
  {$prod}{if $smarty.foreach.products.last}

---

{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>

---

{if $smarty.foreach.foo.last}
 

{$smarty.foreach.foo.total} items

{/if}
{foreachelse}
... something else ...
{/foreach}