PHP - PI

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Metóda - PI

Returns an approximation of π. The precision is limited by the precision of float defined in the php.ini file (14 decimal places by default).

The result is the same as the M_PI constant.

Procedurálne

• function PI () : void

Parametre

Žiadne

Mávratovej hodnoty

Vracia:

The approximation of π.

Príklady

<?php
    // Calculating a circle's area
    echo pi()*(1**2);
?>