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Exponential growth not working

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Strange issue here with basic math. It works on my calculator, but not in PHP.

1000*1.1^1 should result in 1100, but instead gives me 1101.


echo 1000*1.1^1; // 1101

What am I missing? What is with the tiny inaccuracy?

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Most common programming languages use ^ for exclusive or. In PHP's case, ** is actually a relatively recent addition.

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