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sqrt

(PHP 4, PHP 5, PHP 7, PHP 8)

sqrtSquare root

Açıklama

sqrt(float $num): float

Returns the square root of num.

Bağımsız Değişkenler

num

The argument to process

Dönen Değerler

The square root of num or the special value NAN for negative numbers.

Örnekler

Örnek 1 sqrt() example

<?php
// Precision depends on your precision directive
echo sqrt(9); // 3
echo sqrt(10); // 3.16227766 ...
?>

Ayrıca Bakınız

  • pow() - Exponential expression
  • M_SQRTPI - sqrt(pi)
  • M_2_SQRTPI - 2/sqrt(pi)
  • M_SQRT2 - sqrt(2)
  • M_SQRT3 - sqrt(3)
  • M_SQRT1_2 - 1/sqrt(2)

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