sqrt
PHP 4, PHP 5, PHP 7, PHP 8
sqrt - Square root
sqrt( float$num ): float
Returns the square root of num.
Parameters
- num
-
The argument to process
Return Values
The square root of num or the special value NAN for negative numbers.
Returns the square root of num.
The argument to process
The square root of num or the special value NAN for negative numbers.