【www.gdgbn.com--smarty模板】

{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}
 
 
Example 7-16. {if} with more examples

{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}
 
 
实例三