gmp_perfect_square

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

gmp_perfect_square — Perfect square check

˵��

gmp_perfect_square ( GMP $a ) : bool

Check if a number is a perfect square.

����

a

The number being checked as a perfect square.

������һ�� GMP ���� resouce����һ������ת��Ϊ��ֵ���ַ�����

����ֵ

Returns TRUE if a is a perfect square, FALSE otherwise.

����

Example #1 gmp_perfect_square() example

<?php
// 3 * 3, perfect square
var_dump(gmp_perfect_square("9"));

// not a perfect square
var_dump(gmp_perfect_square("7"));

// 1234567890 * 1234567890, perfect square
var_dump(gmp_perfect_square("1524157875019052100"));
?>

�������̻������

bool(true)
bool(false)
bool(true)

�μ�