• smarty -- foreach用法


     {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.

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