Write a function to return the base to the power of its exponent?

First write the function and then suggest the PHP buit-in method for this.

Train Asked on October 31, 2015 in PHP.
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  • 1 Answer(s)
    Best answer

    You must write it as a recursive function in order to get the base multiplied by the exponent recursively.

    function power($num, $pow) {
    if ($pow < 1)
    return 1;
    return $num * power($num, $pow-1);
    //echo power(2, 3);
    //echo pow(2, 3); // This is the php built-in method
    //echo 2 ** 3; //This is beyond php 5.6


    Train Answered on October 31, 2015.
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