hex2bin() Function in PHP 8.2 With Example

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In PHP, the `hex2bin()` function is used to convert hexadecimal strings to binary strings. This function was introduced in PHP 5.4.0.

Here’s how you can use `hex2bin()` in PHP 8.2 with an example:

<?php
// Hexadecimal string
$hexString = "48656c6c6f20576f726c64"; // "Hello World" in hexadecimal
// Convert hexadecimal string to binary
$binaryString = hex2bin($hexString);
// Output the binary string
echo "Binary representation: " . $binaryString . "\n";
// Output the binary string as ASCII
echo "ASCII representation: " . bin2hex($binaryString) . "\n";
?>

Output:

Binary representation: Hello World
ASCII representation: 48656c6c6f20576f726c64