PHPerKaigi 2021

gmp_intval

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

gmp_intvalConvert GMP number to integer

说明

gmp_intval ( GMP|int|string $num ) : int

This function converts GMP number into native PHP ints.

参数

num

GMP 对象或 int ,或数字string

返回值

The int value of num.

范例

示例 #1 gmp_intval() example

<?php
// displays correct result
echo gmp_intval("2147483647") . "\n";

// displays wrong result, above PHP integer limit
echo gmp_intval("2147483648") . "\n";

// displays correct result
echo gmp_strval("2147483648") . "\n";
?>

以上例程会输出:

2147483647
2147483647
2147483648

注释

警告

This function returns a useful result only if the number actually fits the PHP integer (i.e., signed long type). To simply print the GMP number, use gmp_strval().

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