【www.bbyears.com--smarty模板】
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
{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 $var is even by 3}
...
{/if}
if elseif 实例:
{if isset($name) && $name == "Blog"}
{* do something *}
{elseif $name == $foo}
{* do something *}
{/if}
{if is_array($foo) && count($foo) > 0}
{* do a foreach loop *}
{/if}
实例
代码如下
{foreach from=$users item=row}
{foreach from=$row item=col key=k}
{* 注意if语句与小括号(不是必须的)之间的空格,有严格的要求 *}
{$k}:{$col}
{/foreach}
{foreachelse}
没有数据啊
{/foreach}
程序为$users变量赋值为如下数组:
代码如下array(
array("name" => "wjj","age" => "保密"),
array("name" => "qxy","age" => "好像比我小")
)
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