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PHP gmp_perfect_square

PHP original manual for gmp_perfect_square [ show | php.net ]

gmp_perfect_square

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

gmp_perfect_square — Perfect square check

Description

bool gmp_perfect_square ( GMP $a )

Check if a number is a perfect square.

Parameters

a

The number being checked as a perfect square.

Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.

Return Values

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

Examples

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"));
?>

The above example will output:

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

See Also