PHP Math functions pow

echo pow(2,3); // ouptut 8

$a=3; 
$b=4; 
echo pow($a,$b); // output 81

pow(base, exponent)

Example

for($i=1;$i<=10;$i++){
echo $i. "=".pow($i,2)."<br>";
}

1=1
2=4
3=9
4=16
5=25
6=36
7=49
8=64
9=81
10=100

Example: Negative Exponents

echo pow(2, -3);  // Output: 0.125 (equivalent to 1/8)

Example: Compound Interest Calculation

$principal = 1000;
$rate = 0.05;
$years = 10;
$amount = $principal * pow(1 + $rate, $years);
echo $amount;  // Output: 1628.89

Example: Powers of Zero

echo pow(0, 3);  // Output: 0
echo pow(3, 0);  // Output: 1 (Any number raised to the power 0 is 1)

Example: Fractional Exponents (Square Root)

echo pow(16, 0.5);  // Output: 4 (Equivalent to the square root of 16)

Example: Large Exponents

echo pow(2, 30);  // Output: 1073741824

Subhendu Mohapatra

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