{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 a matching {/if}. {else} and {elseif} are also permitted. All PHP conditionals and functions are recognized, such as ||, or, &&, and, is_array(), etc.

If $security is enabled, only PHP functions from the IF_FUNCS array from $security_settings are allowed.

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	>=
===		$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 !=

Sample Usage:

{if $browser.name=="MSIE"}
    <script type="text/javascript" 
	scr="{$relative_template_dir}../jquery.bgiframe.min.js">
    </script>
{else}
	<!-- FireFox --> 
{/if}

HTML Source Output

<script type="text/javascript" 
	src="../_templates/main/../jquery.bgiframe.min.js">
<script>

	<!-- FireFox -->