PHP Math

PHP offers a variety of functions to perform mathematical operations on numbers.

PHP pi() Function

The pi() function returns the value of Pi:

echo(pi());

echo(pi());

PHP min() and max() Functions

The min() and max() functions can be used to find the smallest or largest value in a set of arguments:

echo(min(10, 150, 30, 20, -8, -200)); // Outputs: -200
echo(max(10, 150, 30, 20, -8, -200)); // Outputs: 150

echo(min(10, 150, 30, 20, -8, -200)); // Outputs: -200

echo(max(10, 150, 30, 20, -8, -200)); // Outputs: 150

PHP abs() Function

The abs() function returns the absolute (positive) value of a number:

echo(abs(-9.7)); // Outputs: 9.7

echo(abs(-9.7)); // Outputs: 9.7

PHP sqrt() Function

The sqrt() function returns the square root of a number:

echo(sqrt(81)); // Outputs: 9

echo(sqrt(81)); // Outputs: 9

PHP round() Function

The round() function rounds a floating-point number to the nearest integer:

echo(round(0.70)); // Outputs: 1
echo(round(0.49)); // Outputs: 0

echo(round(0.70)); // Outputs: 1

echo(round(0.49)); // Outputs: 0

Random Numbers

The rand() function generates a random number:

echo(rand());

echo(rand());

To generate a random number within a specific range, you can include optional minimum and maximum parameters. For example, to get a random integer between 50 and 150:

echo(rand(50, 150));

echo(rand(50, 150));