if,elseif,else
{if} statements in Smarty have much the same flexibility as PHP if
statements, with a few added features for the template engine.
Every {if} must be paired with an
{/if}. {else} and
{elseif} are also permitted. All PHP conditionals
are recognized, such as ||, or,
&&, and, etc.
The following is a list of recognized qualifiers, which must be
separated from surrounding elements by spaces. Note that items listed
in [brackets] are optional. PHP equivalents are shown where applicable.
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
<=
!
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
if statements
{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}
{* the following syntax will NOT work, conditional qualifiers
must be separated from surrounding elements by spaces *}
{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}
{* 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}