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This article mainly introduces "what is the meaning of the three equal signs in php". In the daily operation, I believe that many people have doubts about the meaning of the three equal signs in php. The editor consulted all kinds of materials and sorted out a simple and easy-to-use method of operation. I hope it will be helpful to answer the doubts of "what is the meaning of the three equal signs in php?" Next, please follow the editor to study!

In php, "= =" means "absolutely equal" and "always equal" and is a comparison operator of PHP; when the "=" operator is used, the values of the two variables compared are equal and the type is the same, then the result is "true", otherwise "false" is returned, and the syntax is "$x equal equal".

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

What do the three equal signs "=" mean in php

The three equal signs in PHP mean absolutely equal, and if x equals y and they are of the same type, true is returned. Is one of the PHP comparison operators.

Requires that the given left and right variables must be exactly equal. For example, the following comparison of strings and integers:

Output: different data types or values.

=: completely equal to the operation, comparing not only the value, but also the type of the value, which is true only if the two are consistent.

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