Question

How to convert byte array to hex string in PHP

Answer 1

function byteArrayToHexString(array $byteArray): string {
    $hexString = '';
    
    foreach ($byteArray as $byte) {
        $hexString .= strtoupper(str_pad(dechex($byte), 2, '0', STR_PAD_LEFT));
    }
    
    return $hexString;
}

// Simulated byte array
$byteArray = [3, 10, 7, 15, 12, 255];

// Convert to hex string
$hexString = byteArrayToHexString($byteArray);

echo "Hex String: $hexString\n";



/*
run:

Hex String: 030A070F0CFF

*/

 

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