Smarty中{if},{elseif},{else}条件用法介绍
php Smarty模板条件选择结构if-elseif-else，{if}必须和{/if}成对出现，当然也可以使用{else}和{elseif}子句，{if}中可以使用如下修饰词：
if实例
Example 7.15. {if} statements
| 代码如下 | 复制代码 |
| {if $name eq 'Fred'} {* an example with "or" logic *} {* same as above *}
{* check for array. *} {* check for not null. *}
{* 0=even, 1=even, 2=even, 3=odd, 4=odd, 5=odd, etc. *} | |
if elseif 实例：
| 代码如下 | 复制代码 |
| {if isset($name) && $name == 'Blog'} {if is_array($foo) && count($foo) > 0} | |
实例
| 代码如下 | 复制代码 |
| <table> {foreach from=$users item=row} <tr> {foreach from=$row item=col key=k} {* 注意if语句与小括号(不是必须的)之间的空格，有严格的要求 *} <td {if ($col == 'wjj') }style='color:red;'{elseif ($col == 'qxy')}style='color:green;'{/if}>{$k}:{$col}</td> {/foreach} </tr> {foreachelse} <tr><td>没有数据啊</td></tr> {/foreach} </table> | |
程序为$users变量赋值为如下数组：
| 代码如下 | 复制代码 |
| array(
) | |
参考
| Qualifier | Alternates | Syntax Example | Meaning | PHP Equivalent |
|---|---|---|---|---|
| == | eq | $a eq $b | equals | == |
| != | ne, neq | $a neq $b | not equals | != |
| > | gt | $a gt $b | greater than | > |
| < | lt | $a lt $b | less than | < |
| >= | gte, ge | $a ge $b | greater than or equal | >= |
| <= | lte, le | $a le $b | less than or equal | <= |
| === | $a === 0 | check for identity | === | |
| ! | not | not $a | negation (unary) | ! |
| % | mod | $a mod $b | modulous | % |
| is [not] div by | $a is not div by 4 | divisible by | $a % $b == 0 | |
| is [not] even | $a is not even | [not] an even number (unary) | $a % 2 == 0 | |
| is [not] even by | $a is not even by $b | grouping level [not] even | ($a / $b) % 2 == 0 | |
| is [not] odd | $a is not odd | [not] an odd number (unary) | $a % 2 != 0 | |
| is [not] odd by | $a is not odd by $b | [not] an odd grouping | ($a / $b) % 2 != 0 |
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