Php/docs/function.gmp-div-q

• PHP Manual
• GMP 函数
• Divide numbers

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.

PHP 5.5 之前为 GMP 数值资源，PHP 5.6 之后为 GMP 对象或数字，或可以转为数字的字符串。

b

The number that a is being divided by.

PHP 5.5 之前为 GMP 数值资源，PHP 5.6 之后为 GMP 对象或数字，或可以转为数字的字符串。

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.

PHP 5.5 之前为 GMP 数值资源，PHP 5.6 之后为 GMP 对象或数字，或可以转为数字的字符串。

返回值

GMP 对象。

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