PHP: sqrt() function
Description
The sqrt() function is used to create a square root of a number.
Version:
(PHP 4 and above)
Syntax:
sqrt(num)
Parameter:
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| num | The specified number. | Required | Float |
Return value
The square root of num.
Value Type: Float.
Pictorial Presentation
Example:
<?php
echo sqrt(100);
echo'<br>';
echo sqrt(999);
echo'<br>';
echo sqrt(2.25);
echo'<br>';
?>
Output:
10 31.606961258558 1.5
View the example in the browser
See also
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https://www.w3resource.com/php/function-reference/sqrt.php
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