What is the inequality operator in php

There are three types of inequality operators in PHP, namely: 1. != symbol, used to compare the values ​​of two variables; 2. symbol, indicating inequality, and != symbol usage Same; 3. !== symbol, which means absolutely not equal. If the two variable values ​​​​are different or their types are not the same, then true is returned.

#The operating environment of this article: Windows7 system, PHP7.1, Dell G3 computer.

What is the inequality operator in php?

The inequality operators in php are !=, , !==.

You can take a look at the example:

x != y: Not equal, if x is not equal to y, return true 5!=8 Return true;

x y: Not equal, if x is not equal to y, return true 58 Return true;

x !== y: Absolutely not equal, if x is not equal to y, or their types are not If they are the same, return true 5!=="5" Return true .

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