How to use sqrt in PHP
This article describe about sqrt() function in PHP.
sqrt() function
This function return the square of given number.
Syntax
| Parameter |
Description |
| x |
Required. A number |
Note: This function return -1.#IND if parameter is negative.
Example
<html>
<body>
<?php
echo(sqrt(0) . "<br />");
echo(sqrt(1) . "<br />");
echo(sqrt(9) . "<br />");
echo(sqrt(0.64) . "<br />");
echo(sqrt(-9))
?>
</body>
</html> |
Output
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