thinkphp template label if and EQ difference and comparison case analysis

This article illustrates the difference and comparison between the thinkphp template label if and EQ. Share to everyone for your reference. The specific analysis is as follows:

In the TP template language. Both if and EQ can be used for comparison of variables. Summarize the following points:

1. Comparison of two variables:

?

1

2

　　

If the former is a failure to judge, use the latter's (or ) ok. Note: Name there is no need to add the $ variable symbol, and value there to add the $ variable symbol.

2. When the value is empty (NULL):

?

1

2 just a test

　　 Just a test

If the former is judged to be unsuccessful, the latter (or ) can recognize null as ""

3. Multidimensional array with subscript 0:

?

1

2 just a test

　　 Just a test

The former can not be compiled by using if, and the EQ on the back will

I hope this article will help you with the PHP program design based on thinkphp.