Shulou(Shulou.com)06/01 Report--

This article mainly explains "php is not exactly equal to how to use", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let Xiaobian take you to learn "php is not exactly equal to how to use it"!

In PHP,"!== "Not exactly equal is also called absolutely not equal operator. When the values on both sides of the operator are different or the types are different, the return result is"true", otherwise it returns"false", and the syntax is"x !==". y"。

Operating environment: Windows 10 system, PHP 7.1 version, Dell G3 computer.

php!== What is the use of not exactly equal?

absolutely not equal returns true if x is not equal to y, or they are of different types

5!== "5" returns true

The full equality operation process is as follows:

1. Determine whether the data types of the sides of the congruent operator 2 are the same. If they are not, return false.

2. Determine whether the values of the two sides of the congruent operator are equal. If not, return false.

3. Finally, perform the above 2 steps and operations. Returns the result of the operation with.

Not exactly equal to (!==) The operation process is exactly the opposite of total equality:

1. Determine whether the data types of the edges that are not exactly equal to operator 2 are the same. If not, return true.

2. Determine whether the values of the edges that are not exactly equal to operator 2 are equal. If they are not equal, return true.

3. Finally, perform the above 2 steps or operations. Returns the result of the or operation.

Examples are as follows:

Output:

At this point, I believe that everyone has a deeper understanding of "php is not exactly equal to how to use", may wish to actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.