eval
Attribute Name
Type
Required
Default
Description
var
mixed
Yes
n/a
variable (or string) to evaluate
assign
string
No
n/a
the template variable the output will be assigned
to
eval is used to evaluate a variable as a template. This can be used
for things like embedding template tags/variables into variables or
tags/variables into config file variables.
If you supply the special "assign" attribute, the output of the
eval function will be assigned to this template variable instead of
being output to the template.
Technical Note
Evaluated variables are treated the same as templates. They follow
the same escapement and security features just as if they were
templates.
Technical Note
Evaluated variables are compiled on every invocation, the compiled
versions are not saved! However if you have caching enabled, the
output will be cached with the rest of the template.
eval
setup.conf
----------
emphstart = <b>
emphend = </b>
title = Welcome to {$company}'s home page!
ErrorCity = You must supply a {#emphstart#}city{#emphend#}.
ErrorState = You must supply a {#emphstart#}state{#emphend#}.
index.tpl
---------
{config_load file="setup.conf"}
{eval var=$foo}
{eval var=#title#}
{eval var=#ErrorCity#}
{eval var=#ErrorState# assign="state_error"}
{$state_error}
OUTPUT:
This is the contents of foo.
Welcome to Foobar Pub & Grill's home page!
You must supply a <b>city</b>.
You must supply a <b>state</b>.