如何检查是否已经分配了 Smarty 变量? [英] How do I check to see if a Smarty variable is already assigned?

问题描述

如何检查是否已将特定值分配给 Smarty，如果未分配(默认)值?

How do I check to see if a particular value has already been assigned to Smarty and if not assign a (default) value?

答案:

if ($this->cismarty->get_template_vars('test') === null) {
   $this->cismarty->assign('test', 'Default value');
}

推荐答案

Smarty 2

if ($smarty->get_template_vars('foo') === null) 
{
   $smarty->assign('foo', 'some value');
}

Smarty 3

if ($smarty->getTemplateVars('foo') === null) 
{
   $smarty->assign('foo', 'some value');
}

请注意，对于 Smarty 3，您必须改用 $smarty->getTemplateVars.

Note that for Smarty 3, you will have to use $smarty->getTemplateVars instead.

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