php {如果不是 isset} Smarty
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{if not isset} Smarty
提问by Rami Dabain
what is the code for smarty for if (!isset($var)){?
smarty 的代码是什么if (!isset($var)){？
if using {if $x eq '5'} when $x is not defined in smarty , it gives an error function call 'get_template_vars' is unknown or deprecated.. this is what i believe so far as i lost hope in trying to know where did this error come from !
如果在 smarty 中未定义 $x 时使用 {if $x eq '5'} ，则会出现错误function call 'get_template_vars' is unknown or deprecated.。这就是我所相信的，因为我对试图知道这个错误来自哪里失去了希望！
Thanky you .
谢谢你 。
回答by Timofey Stolbov
{if ! isset($var)}
body must be at least 30 characters. :)
{/if}
回答by Vladimir Djuricic
Try this.
尝试这个。
{if $missing_var|default:FALSE}
NOT MISSING
{else}
MISSING
{/if}
回答by Anil R
Try This
尝试这个
{if $var}
Active
{else}
Inactive
{/if}
