# gmp_sqrtrem

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

gmp_sqrtrem — Square root with remainder

### 说明

gmp_sqrtrem(GMP|int|string `$num`): array

Calculate the square root of a number, with remainder.

### 参数

`num`

  The number being square rooted.

  GMP 对象、int 或 string，可以按照跟在 gmp_init() 中使用字符串并自动检测 base（即当 base 等于 0 时）相同的逻辑将其解释为数字。

### 返回值

Returns array where first element is the integer square root of `num` and the second is the remainder (i.e., the difference between `num` and the first element squared).

### 示例

示例 #1 gmp_sqrtrem() example

`<?php
list($sqrt1, $sqrt1rem) = gmp_sqrtrem("9");
list($sqrt2, $sqrt2rem) = gmp_sqrtrem("7");
list($sqrt3, $sqrt3rem) = gmp_sqrtrem("1048576");
echo gmp_strval($sqrt1) . ", " . gmp_strval($sqrt1rem) . "\n";
echo gmp_strval($sqrt2) . ", " . gmp_strval($sqrt2rem) . "\n";
echo gmp_strval($sqrt3) . ", " . gmp_strval($sqrt3rem) . "\n";
?>`

以上示例会输出：

    3, 0
    2, 3
    1024, 0

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