квадратный корень Php
<?php
echo(sqrt(0) . "<br>");
echo(sqrt(1) . "<br>");
echo(sqrt(9) . "<br>");
echo(sqrt(0.64) . "<br>");
echo(sqrt(-9));
?>
Bicodev
<?php
echo(sqrt(0) . "<br>");
echo(sqrt(1) . "<br>");
echo(sqrt(9) . "<br>");
echo(sqrt(0.64) . "<br>");
echo(sqrt(-9));
?>use this post.
https://github.com/square/square-php-sdk<?php
/*
The sqrt() function returns square root of a positive float number.
Since square root for negative number is not defined, it returns NAN.
This is one of the most commonly used functions. This function always
returns a floating point number. Eg:
*/
echo(sqrt(0) . "<br>"); // output: 0
echo(sqrt(1) . "<br>"); // output: 1
echo(sqrt(9) . "<br>"); // output: 3
echo(sqrt(0.64) . "<br>"); // output: 0.8
echo(sqrt(-9)); // output: NAN
// I hope this helps!
?>