PHP Math
PHP has a set of math functions that allows you to perform mathematical tasks on numbers.
PHP pi() Function
The pi() function returns the value of PI:
PHP min() and max() Functions
The min() and max() functions can be used to find the lowest or highest value in a list of arguments:
Example
<?php
echo(min(0, 150, 30, 20, -8, -200)); // returns -200
echo(max(0, 150, 30, 20, -8, -200)); // returns 150
?>
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PHP abs() Function
The abs() function returns the absolute (positive) value of a number:
PHP sqrt() Function
The sqrt() function returns the square root of a number:
PHP round() Function
The round() function rounds a floating-point number to its nearest integer:
Random Numbers
The rand() function generates a random number:
To get more control over the random number, you can add the optional min and max parameters to specify the lowest integer and the highest integer to be returned.
For example, if you want a random integer between 10 and 100 (inclusive), use rand(10, 100):
Complete PHP Math Reference
For a complete reference of all math functions, go to our complete PHP Math Reference.
The PHP math reference contains description and example of use, for each function.
