PHP Math

PHP pi() Function

The pi() function returns the value of π (pi).

Example

echo(pi());

PHP min() and max() Functions

The min() and max() functions can be used to determine the lowest and highest values from a list of arguments, respectively.

Example

echo(min(0, 150, 30, 20, -8, -200));
echo(max(0, 150, 30, 20, -8, -200));

PHP abs() Function

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

Example

PHP sqrt() Function

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

Example

PHP round() Function

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

Example

echo(round(0.60));
echo(round(0.49));

Random Numbers

The rand() function generates a random number.

Example

To gain more control over the random number generated, you can add optional min and max parameters to define the lowest and highest integers to be returned.

For instance, to get a random integer between 10 and 100 (inclusive), use rand(10, 100).

Example