Example
Return the value of PI:
html
<?php
echo(pi());
?>
Definition and Usage
The pi() function returns the value of PI.
Tip: The named constant M_PI is identical to pi().
Syntax
text
pi();
Technical Details
| Return Value: | 3.1415926535898 |
|---|---|
| Return Type: | Float |
| PHP Version: | 4+ |