# gmp_div_q

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

gmp_div_q — Divide numbers

### 说明

gmp_div_q ( GMP `$a` , GMP `$b` [, int `$round` = GMP_ROUND_ZERO ] ) : GMP

Divides `a` by `b` and returns the integer result.

### 参数

`a`

  The number being divided.

  可以是一个 GMP 数据 resouce，或一个可以转换为数值的字符串。

`b`

  The number that `a` is being divided by.

  可以是一个 GMP 数据 resouce，或一个可以转换为数值的字符串。

`round`

  The result rounding is defined by the `round`, which can have the following values:

  - `GMP_ROUND_ZERO`: The result is truncated towards 0.
  - `GMP_ROUND_PLUSINF`: The result is rounded towards +infinity.
  - `GMP_ROUND_MINUSINF`: The result is rounded towards -infinity.

  可以是一个 GMP 数据 resouce，或一个可以转换为数值的字符串。

### 返回值

GMP 数值资源.

### 范例

Example #1 gmp_div_q() example

    <?php
    $div1 = gmp_div_q("100", "5");
    echo gmp_strval($div1) . "\n";

    $div2 = gmp_div_q("1", "3");
    echo gmp_strval($div2) . "\n";

    $div3 = gmp_div_q("1", "3", GMP_ROUND_PLUSINF);
    echo gmp_strval($div3) . "\n";

    $div4 = gmp_div_q("-1", "4", GMP_ROUND_PLUSINF);
    echo gmp_strval($div4) . "\n";

    $div5 = gmp_div_q("-1", "4", GMP_ROUND_MINUSINF);
    echo gmp_strval($div5) . "\n";
    ?>

以上例程会输出：

    20
    0
    1
    0
    -1

### 注释

> Note:

> This function can also be called as gmp_div().

### 参见

- gmp_div_r() - Remainder of the division of numbers
- gmp_div_qr() - Divide numbers and get quotient and remainder