PHP: gmp_perfect_square - Manual (original) (raw)

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

gmp_perfect_square — Perfect square check

Description

Parameters

num

The number being checked as a perfect square.

A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when base is equal to 0).

Return Values

Returns [true](reserved.constants.php#constant.true) if num is a perfect square,[false](reserved.constants.php#constant.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

• gmp_perfect_power() - Perfect power check
• gmp_sqrt() - Calculate square root
• gmp_sqrtrem() - Square root with remainder

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