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PHP Quiz PHP CertificatePHP pi() Function
Complete PHP Math Reference
Definition and Usage
The pi() function returns the value of PI.
Syntax
pi()
Tips and Notes
Tip: The named constant M_PI, yields identical results to pi().
Example
<?php
echo pi();
?>
echo pi();
?>
The output of the code above will be:
3.14159265359
Complete PHP Math Reference
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