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

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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