Thinkphp user-defined functions and usage

The methods of thinkphp user-defined functions are different from those of thinkphp. for versions earlier than 3.2, the user-defined functions should be placed in the project application directory commoncommon. in php, for versions 3.2 and later, user-defined functions should be placed in the project application directory commonfunction. in php, this is the key. The usage of user-defined functions is the same as that of built-in php functions. Instance:

Step 1: place the UDF in the project application directory/common. php or/common/function. php.

Function Cate ($ cid) {$ Cate = D ('Cate'); $ Cate = $ Cate-> where ('Id = '. $ cid)-> find (); return $ Cate ['title'];}

Step 2: Use the following method in the template.

{$ Vo. cid | cate ###}