gmp_sqrt
(PHP 4 >= 4.0.4, PHP 5)
gmp_sqrt — Calculate square root
參數
-
a -
可以是一個 GMP 數據 resouce，或一個可以轉換為數值的字串。
回傳值
The integer portion of the square root, as a GMP number.
範例
Example #1 gmp_sqrt() example
<?php
$sqrt1 = gmp_sqrt("9");
$sqrt2 = gmp_sqrt("7");
$sqrt3 = gmp_sqrt("1524157875019052100");
echo gmp_strval($sqrt1) . "\n";
echo gmp_strval($sqrt2) . "\n";
echo gmp_strval($sqrt3) . "\n";
?>
上例將輸出：
3 2 1234567890
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