Sqrt in PHP

Getting the square root of a number in PHP is pretty simple. The built-in sqrt() function can be used to compute the square root of a number.

Syntax:

sqrt(number)

Here's an example:

$number = 9;
$squareRoot = sqrt($number);
echo "The square root of {$number} is {$squareRoot}.";

Output:

The square root of 9 is 3.

You can also use the sqrt() function in mathematical expressions:

$a = 25;
$b = 16;
$c = sqrt($a) + sqrt($b);
echo "The result is: {$c}";

Output:

The result is: 9