How to use php hex2bin function

php hex2bin function is used to convert a string of hexadecimal values ​​into ASCII characters. Its syntax is hex2bin(string). The parameter string is required and refers to the hexadecimal value to be converted.

php How to use hex2bin function?

Definition and Usage

The hex2bin() function converts a string of hexadecimal values ​​into ASCII characters.

Syntax

hex2bin(string)

Parameters

string Required. The hexadecimal value to convert.

Return value: Returns the ASCII characters of the converted string, or FALSE if it fails.

PHP Version: 5.4.0

Change Log:

As of PHP 5.4.1, a warning is thrown if the string length is odd. In PHP 5.4.0, odd strings are silently accepted, but the last byte is removed.

As of PHP 5.5.1, a warning is thrown if the string is an invalid hexadecimal string.

Example

Convert hexadecimal value to ASCII character:

<?php
echo hex2bin("48656c6c6f20576f726c6421");
?>

Output of the above code:

Hello World!

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