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GMP
PHP Manual

gmp_div_q

(PHP 4 >= 4.0.4, PHP 5)

gmp_div_q — Divide numbers

说明

resource gmp_div_q ( resource $a , resource $b [, int $round ] )

Divides a by b and returns the integer result.

参数

a

The number being divided.

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

b

The number that a is being divided by.

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

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.

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

返回值

A GMP number resource.

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";
?>

上例将输出：

20
0
1
0
-1

注释

Note: This function can also be called as gmp_div().

参见

GMP
PHP Manual