Quick Reference
The PHP pi() function returns the value of PI.
<?php
echo(pi());
?>Output
3.1415926535898Syntax
pi()PHP Notes:
- When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
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