php man page for gmp_perfect_square

GMP_PERFECT_SQUARE(3)							 1						     GMP_PERFECT_SQUARE(3)

gmp_perfect_square - Perfect square check

SYNOPSIS
       bool gmp_perfect_square (GMP  $a)

DESCRIPTION
	Check if a number is a perfect square.

PARAMETERS
	      o $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(3) 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_sqrt(3), gmp_sqrtrem(3).

PHP Documentation Group 												     GMP_PERFECT_SQUARE(3)