sqrt
(PHP 4, PHP 5)
sqrt — Square root
Descrierea
float sqrt
( float $arg
)
Returns the square root of arg .
Parametri
- arg
-
The argument to process
Valorile întroarse
The square root of arg
Exemple
Example#1 sqrt() example
<?php
// Precision depends on your precision directive
echo sqrt(9); // 3
echo sqrt(10); // 3.16227766 ...
?>