PHP dechex() Function

The dechex() is predefined PHP mathematical function, which is used to convert decimal number to hexadecimal number.

Syntax:

Parameter	Description	Required/Optional
number	Specify the decimal value	Required

Example 1

<?php
$decimal=7;
echo "Your Decimal number is : ".$decimal."<br>";	
echo "By using 'dechex()'function, your Hexadecimal number is :".dechex($decimal);
?>

Output:

Your Decimal number is : 7
By using 'dechex()'function, your Hexadecimal number is :7

Example 2

<?php
$decimal=10;
echo "Your Decimal number is : ".$decimal."<br>";	
echo "By using 'dechex()'function, your Hexadecimal number is :".dechex($decimal);
?>

Output:

Your Decimal number is : 10
By using 'dechex()'function, your Hexadecimal number is :a

Example 3

<?php
$decimal=30;
echo "Your Decimal number is : ".$decimal."<br>";	
echo "By using 'dechex()'function, your Hexadecimal number is :".dechex($decimal);
?>

Output:

Your Decimal number is : 30
By using 'dechex()'function, your Hexadecimal number is :1e

Example 4

<?php
$decimal=1587;
echo "Your Decimal number is : ".$decimal."<br>";	
echo "By using 'dechex()'function, your Hexadecimal number is :".dechex($decimal);
?>

Output:

Your Decimal number is : 1587
By using 'dechex()'function, your Hexadecimal number is :633

Example 5

<?php
$decimal=70;
echo "Your Decimal number is : ".$decimal."<br>";	
echo "By using 'dechex()'function, your Hexadecimal number is :".dechex($decimal);
?>

Output:

Your Decimal number is : 70
By using 'dechex()'function, your Hexadecimal number is :46

Example 6

<?php
// The output below assumes a 32-bit platform.
// Note that the output is the same for all values.
echo dechex(-1)."\n";
echo dech ex(PHP_INT_MAX * 2 + 1)."\n";
echo dechex(pow(2, 32) - 1)."\n";
?>

Output: