PHP5中文手册·Inverse by modulo -- 追寻梦想＞编程乐园＞PHP 编程

说明

resource gmp_invert ( resource $a , resource $b )

Computes the inverse of a modulo b .

参数

a: 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: 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 on success or FALSE if an inverse does not exist.

范例

Example#1 gmp_invert() example


<?php
echo gmp_invert("5", "10"); // no inverse, outputs nothing, result is FALSE
$invert = gmp_invert("5", "11");
echo gmp_strval($invert) . "\n";
?>

上例将输出：


	PHP5中文手册 gmp_intval gmp_jacobi GMP PHP Manual gmp_invert (PHP 4 >= 4.0.4, PHP 5) gmp_invert — Inverse by modulo 说明 resource gmp_invert ( resource `$a` , resource `$b` ) Computes the inverse of `a` modulo `b` . 参数 `a` 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` 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 on success or `FALSE` if an inverse does not exist. 范例 Example#1 gmp_invert() example `<?php echo gmp_invert("5", "10"); // no inverse, outputs nothing, result is FALSE $invert = gmp_invert("5", "11"); echo gmp_strval($invert) . "\n"; ?>` 上例将输出： 9 gmp_intval gmp_jacobi GMP PHP Manual