ThinkPHP template determines the usage of output Empty tag

This article mainly introduces the usage of the Empty tag in ThinkPHP template judgment output. Friends who need it can refer to

The empty tag of ThinkPHP template is used to judge whether the template variable is empty.

ThinkPHP template empty tag is used to determine whether the template variable is empty. Its function is equivalent to the empty() function behavior in PHP. The format of the empty tag is as follows:

要输出的内容

The specific usage is as shown in the following example:

username 为空值
      
This example is equivalent to:
      

      
If you judge a non-empty value, you can use the notempty tag, as follows Shown:
      
username 不为空
      
The two tags can be combined to write:
      
username 为空值username 不为空
      
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