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smarty -- foreach用法

时间:2016-07-24 16:19:37      阅读:168      评论:0      收藏:0      [点我收藏+]

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 {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 nameattribute.

  • {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 nameundefined 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 indexiterationfirstlastshowtotal.

  • {foreach}属性有index, iteration, first, last, show, total.   
  1. Example 7-7. {foreach} with associative item attribute
  2.  
  3. 7-7. {foreach}的item属性是关联数组
  4.  
  5. <?php
  6. $items_list = array(
  7. 23 => array(‘no‘ => 2456, ‘label‘ => ‘Salad‘),
  8. 96 => array(‘no‘ => 4889, ‘label‘ => ‘Cream‘)
  9. );
  10. $smarty->assign(‘items‘, $items_list);
  11. ?>
  12.  
  13. Template to output $items with $myId in the url
  14.  
  15. 模板中,url通过$myId输出$items
  16.  
  17. <ul>
  18. {foreach from=$items key=myId item=i}
  19. <li><a href="http://blog.163.com/lgh_2002/blog/item.php?id={$myId}">{$i.no}: {$i.label}</li>
  20. {/foreach}
  21. </ul>
  22.  
  23. The above example will output:
  24.  
  25. 上例将输出:
  26.  
  27. <ul>
  28. <li><a href="http://blog.163.com/lgh_2002/blog/item.php?id=23">2456: Salad</li>
  29. <li><a href="http://blog.163.com/lgh_2002/blog/item.php?id=96">4889: Cream</li>
  30. </ul>
  1. Example 7-8. {foreach} with nested item and key
  2.  
  3. 7-8. {foreach}使用嵌套的itemkey
  4.  
  5. Assign an array to Smarty, the key contains the key for each looped value.
  6.  
  7. 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。
  8.  
  9. <?php
  10. $smarty->assign(‘contacts‘, array(
  11. array(‘phone‘ => ‘1‘,
  12. ‘fax‘ => ‘2‘,
  13. ‘cell‘ => ‘3‘),
  14. array(‘phone‘ => ‘555-4444‘,
  15. ‘fax‘ => ‘555-3333‘,
  16. ‘cell‘ => ‘760-1234‘)
  17. ));
  18. ?>
  19.  
  20. The template to output $contact.
  21.  
  22. 用于输出$contact的模板。
  23.  
  24. <foreach name=outer item=contact from=$contacts}
  25. <hr />
  26. {foreach key=key item=item from=$contact}
  27. {$key}: {$item}<br />
  28. {/foreach}
  29. {/foreach}
  30.  
  31. The above example will output:
  32.  
  33. 上例将输出:
  34.  
  35. <hr />
  36. phone: 1<br />
  37. fax: 2<br />
  38. cell: 3<br />
  39. <hr />
  40. phone: 555-4444<br />
  41. fax: 555-3333<br />
  42. 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。

 

  1. {* 每五行输出一次头部区块 *}
  2. <table>
  3. {foreach from=$items key=myId item=i name=foo}
  4. {if $smarty.foreach.foo.index % 5 == 0}
  5. <tr><th>Title</th></tr>
  6. {/if}
  7. <tr><td>{$i.label}</td></tr>
  8. {/foreach}
  9. </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。

  1. {* 该例将输出0|1, 1|2, 2|3, ... 等等 *}
  2. {foreach from=$myArray item=i name=foo}
  3. {$smarty.foreach.foo.index}|{$smarty.foreach.foo.iteration},
  4. {/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。

  1. {* 对于第一个条目显示LATEST而不是id *}
  2. <table>
  3. {foreach from=$items key=myId item=i name=foo}
  4. <tr>
  5. <td>{if $smarty.foreach.foo.first}LATEST{else}{$myId}{/if}</td>
  6. <td>{$i.label}</td>
  7. </tr>
  8. {/foreach}
  9. </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。

  1. {* 在列表结束时增加一个水平标记 *})
  2. {foreach from=$items key=part_id item=prod name=products}
  3. <a href="http://blog.163.com/lgh_2002/blog/#{$part_id}">{$prod}</a>{if $smarty.foreach.products.last}<hr>{else},{/if}
  4. {foreachelse}
  5. ... content ...
  6. {/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。

  1. {* 在结束位置显示行数 *}
  2. {foreach from=$items key=part_id item=prod name=foo}
  3. {$prod.name><hr/>
  4. {if $smarty.foreach.foo.last}
  5. <div id="total">{$smarty.foreach.foo.total} items</div>
  6. {/if}
  7. {foreachelse}
  8. ... something else ...
  9. {/foreach}     

See also {section} and $smarty.foreach.

smarty -- foreach用法

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原文地址:http://www.cnblogs.com/hanqishihu/p/5700780.html

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