PHP GMP gmp_cmp() Function

PHP has a built-in function called gmp_cmp() that is used to compare two GMP numbers.

Syntax

The following syntax shows a clear bit function using GMP numbers.

Parameter

The two GMP numbers such as $number1 and $number2 are required parameters for this function.
In PHP versions 5.6 and later, the given parameters can be a GMP object.
We can also pass numeric string values that can be converted into numbers.

Return Value

If the "number" output displays then $number1 is greater than $number2,
If the "0" output displays then $number1 is the same as $number2,
If the "-number" output displays then $number1 is less than $number2.

Examples

The following examples show the "comparison" function using the GMP parameters.

Example1: The following example shows the basic comparison operation using the GMP function.

<!DOCTYPE html>
<html>
<body>
<h4> PHP gmp_cmp() Function </h4>
<?php
$value1 = gmp_cmp("85", "51");
$value2 = gmp_cmp("8","15" );
$value3 = gmp_cmp("185","185" );
echo "The first value is greater than the second value: ".$value1;
echo "<br/>";
echo "The second value is greater than the first value: ".$value2;
echo "<br/>";
echo "The first value is equal to the second value: ".$value3;
?>
</body>
</html>

Output:

The following output image shows the basic comparison operation using the GMP function.

Example2: The following example shows the comparison operation using the GMP function.

<!DOCTYPE html>
<html>
<body>
<h4> PHP gmp_cmp() Function </h4>
<?php
$value1 = gmp_cmp("51", "-85");
$value2 = gmp_cmp("-8","15" );
$value3 = gmp_cmp("-8","-8" );
echo "The first value is greater than the second value: ".$value1;
echo "<br/>";
echo "The second value is greater than the first value: ".$value2;
echo "<br/>";
echo "The first value is equal to the second value: ".$value3;
?>
</body>
</html>

Output:

The following output image shows the comparison operation using the GMP function.

Example3: the following example shows a comparison of the two values using the "gmp_cmp()" operator.

<!DOCTYPE html>
<html>
<body>
<h4> PHP gmp_cmp() Function </h4>
<?php
$number1 = "510";
$number2 = "205";
$number3 = "700";
$value1 = gmp_cmp($number1, $number1);
$value2 = gmp_cmp($number1,$number2);
$value3 = gmp_cmp($number2,$number3 );
echo " The comparison of the GMP two numbers: ".$value1;
echo "<br/>";
echo "The comparison of the GMP two numbers: ".$value2;
echo "<br/>";
echo "The comparison of the GMP two numbers: ".$value3;
?>
</body>
</html>

Output:

The following output shows the comparison values using the GMP function.

Example4: the following example shows the operation of the two values using the "gmp_cmp()" function. This function uses variable, other GMP functions with the "gmp_abs" function.

<!DOCTYPE html>
<html>
<body>
<h4> PHP gmp_cmp() Function </h4>
<?php
$number1 = "510";
$number2 = "-205";
$value1 = gmp_cmp($number1, $number2);
echo "The comparison value of two numbers: ".$value1;
echo "<br/>";
$value2 = gmp_abs($number2);
echo "<br/>";
$value3 = gmp_cmp($number1,$value2 );
echo "The comparison of the GMP two numbers: ".$value3;
?>
</body>
</html>

Output:

The following output shows the "AND" comparison value.

Example5: the following example shows the "gmp_cmp" with the "gmp_init" function.

<!DOCTYPE html>
<html>
<body>
<h4> PHP gmp_cmp() Function </h4>
<?php
$value1 = gmp_init("534");
$value2 = gmp_init("314");
$value3 = gmp_cmp($value1,$value2 );
$value4 = gmp_cmp($value2,$value1 );
echo "The comparison of the GMP two numbers: ".$value3;
echo "<br/>";
echo "The comparison of the GMP two numbers: ".$value4;
?>
</body>
</html>

Output:

The following output shows the comparison value.