(PHP 4 >= 4.0.4, PHP 5, PHP 7)
gmp_div_q — Divide numbers
Divides a by b and
returns the integer result.
aThe 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。
PHP 5.5 之前，返回 GMP 数值资源，PHP 5.6 之后，返回 GMP 对象。
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
Note:
This function can also be called as gmp_div().