sqrt
(PHP 3, PHP 4, PHP 5)
sqrt -- Square root
Beskrivelse
float
sqrt ( float arg )
Returns the square root of arg
.
Parameterliste
arg
The argument to process
Returneringsværdier
The square root of arg
Eksempler
Eksempel 1. sqrt() example
<?php // Precision depends on your precision directive echo sqrt(9); // 3 echo sqrt(10); // 3.16227766 ... ?>
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