Ways to use PHP functions in Smarty Templates

2. In the smarty template, if you want to use PHP functions in the displayed data , if it is a function with only one parameter, for example, a blank trim will be written
4. Sample1
6. The code is as follows:
12. <{$colname| Trim}>
18. What if I use a function like Iconv that has three parameters? If written as :
20. Sample 2
24. The code is as follows:
30. <{$colname| Iconv: 'utf-8 ':' GBK '}>
36. An error message is displayed when you execute it .  
38. Therefore, the study will find that starting in the smarty template page of the application function usage, in smaple 1 ,trim front $Row - ColName is actually the first parameter of trim, in the middle with | This symbol is threaded;
40. That assumes that you want to use a function like Iconv with three parameters, write:
42. Sample 3
44. The code is as follows:
50. <{' utf-8 '| Iconv:' GBK ':$colname}>
56. Also
58. Function First Argument | function: Second argument: third argument. in Sample 3 , the value of ColName is converted from UTF-8 format to GBK.

Ways to use PHP functions in Smarty Templates