How can I calculate the power of Npower in PHP?

PHP has an open-square function sqrt (), but I want to open a 1.2 power. what is the best solution? Can I write only one function by myself? PHP has an open-square function sqrt (), but I want to open a 1.2 power. what is the best solution? Can I write only one function by myself?

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PHP has an open-square function sqrt (), but I want to open a 1.2 power. what is the best solution? Can I write only one function by myself?

Error =. =, Use pow (). the square of the 25 mathematical principle is that 25 is 1/2 to the power, so 25 is 1.2 to the power of 25. power 2 pow (1.2)

Use the pow () function. for example, if 100 is enabled, the power of 1.2 is the power of 100. 2 of 1/1, which is written as pow (1.2, 1)

Use php5.6Echo 25 ** (1/1. 2); // 14.620088691064