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This article mainly explains "what is the meaning of-= in php". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is the meaning of-= in php".

In php, the-= symbol represents the subtraction operator, which has a syntax such as "x-= y", which is equivalent to "x = x-y", where the "=" symbol is the basic assignment operator in PHP.

This article operating environment: windows7 system, PHP7.4 version, DELL G3 computer

The first thing to know is that in PHP, the basic assignment operator is "=". It means that the left Operand is set to the value of the right expression. That is, the value of "$x = 5" is 5.

And what does-= mean in php?

X-= y is equivalent to x = x-y, which means minus.

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