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This article mainly explains "how php turns positive numbers into negative numbers". The content of 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 "how php turns positive numbers into negative numbers".

This article operating environment: windows7 system, PHP7.1 version, DELL G3 computer

How does php turn a positive number into a negative number?

An example of a positive to negative code is as follows

$number = 99% echo number * =-1 × echo $number; / / output-99

Attached:

A negative number becomes a positive number.

$number =-11 leading result = abs ($number); echo $result; / / output 11

The abs () function returns the absolute value of a number.

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