Thinkphp judge if there is data

thinkphp determine if there is data

You can use the empty label to determine if the template variable is empty,

Empty label and Notempty label
closed	non-closed label
attribute	name (required): variable name
With	Can be used in conjunction with else tags

Usage:

2. <>< span=""> name="name">null value for name <>

If the judgment is not assigned, you can use:

2. <>< span=""> name="name">name is not empty <>

the above two tags can be merged into:

1. <>< span=""> name="name">name is empty <> < span=""> /> name is not empty <> <>

