HomeMenu
Jesus · Bible · HTML · CSS · JS · PHP · SVG · Applications

dechex

Description

The dechex of Math for PHP decimal to hexadecimal.

Syntax

dechex(
    int $num
): string

Parameters

num

The decimal value to convert. As PHP's integer type is signed, but dechex() deals with unsigned integers, negative integers will be treated as though they were unsigned.

Negative DecimalPositive DecimalHexadecimal
00
11
22
......
92233720368547758067ffffffffffffffe
9223372036854775807 (largest signed integer)7fffffffffffffff
-922337203685477580892233720368547758088000000000000000
.........
-218446744073709551614fffffffffffffffe
-118446744073709551615 (largest unsigned integer)ffffffffffffffff

Return

Hexadecimal string representation of num.

Examples

1

<?

$num = 0;

$return = dechex($num);

echo $return;

0

2

<?

$num = 1;

$return = dechex($num);

echo $return;

1

3

<?

$num = 2;

$return = dechex($num);

echo $return;

2

4

<?

$num = 9223372036854775806;

$return = dechex($num);

echo $return;

7ffffffffffffffe

5

<?

$num = 9223372036854775807;

$return = dechex($num);

echo $return;

7fffffffffffffff

6

<?

$num1 = -9223372036854775808;
$num2 = 9223372036854775808;

$return1 = dechex($num1);
$return2 = dechex($num2);

echo $return1 . PHP_EOL
. $return2;

7
<?

$num1 = -2;
$num2 = 18446744073709551614;

$return1 = dechex($num1);
$return2 = dechex($num2);

echo $return1 . PHP_EOL
. $return2;

8
<?

$num1 = -1;
$num2 = 18446744073709551615;

$return1 = dechex($num1);
$return2 = dechex($num2);

echo $return1 . PHP_EOL
. $return2;