Smarty 是什么？
为什么要使用它？
用例和工作流程
语法比较
模板继承
最佳实践
速成教程
Smarty 是什么？
为什么要使用它？
用例和工作流程
语法比较
模板继承
最佳实践
速成教程
快速安装
文档
讨论
邮件列表
Github
示例 App
www.phpinsider.com
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{if}{if}{/if}{else}{elseif}
如果启用了安全性，则仅允许安全策略的 $php_functions 属性中的 PHP 函数。有关详细信息，请参阅安全性部分。
以下是已识别标识符列表，这些标识符必须用空格与周围元素分开。请注意，[方括号] 中列出的项目是可选的。在适用的情况下显示 PHP 等效项。
| 标识符 | 其他选项 | 语法示例 | 含义 | PHP 等效项 |
|---|---|---|---|---|
| == | 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 $b | [not] 一个奇数分组 | （$a / $b） % 2 != 0 |
示例 7.44。{if} 语句
{if $name eq 'Fred'}
Welcome Sir.
{elseif $name eq 'Wilma'}
Welcome Ma'am.
{else}
Welcome, whatever you are.
{/if}
{* an example with "or" logic *}
{if $name eq 'Fred' or $name eq 'Wilma'}
...
{/if}
{* same as above *}
{if $name == 'Fred' || $name == 'Wilma'}
...
{/if}
{* parenthesis are allowed *}
{if ( $amount < 0 or $amount > 1000 ) and $volume >= #minVolAmt#}
...
{/if}
{* you can also embed php function calls *}
{if count($var) gt 0}
...
{/if}
{* check for array. *}
{if is_array($foo) }
.....
{/if}
{* check for not null. *}
{if isset($foo) }
.....
{/if}
{* test if values are even or odd *}
{if $var is even}
...
{/if}
{if $var is odd}
...
{/if}
{if $var is not odd}
...
{/if}
{* test if var is divisible by 4 *}
{if $var is div by 4}
...
{/if}
{*
test if var is even, grouped by two. i.e.,
0=even, 1=even, 2=odd, 3=odd, 4=even, 5=even, etc.
*}
{if $var is even by 2}
...
{/if}
{* 0=even, 1=even, 2=even, 3=odd, 4=odd, 5=odd, etc. *}
{if $var is even by 3}
...
{/if}
示例 7.45。带有更多示例的 {if}
{if isset($name) && $name == 'Blog'}
{* do something *}
{elseif $name == $foo}
{* do something *}
{/if}
{if is_array($foo) && count($foo) > 0}
{* do a foreach loop *}
{/if}