Question

How to generate a random hexadecimal string in PHP

Answer 1

function generateHex($length) {
    $hexChars = '0123456789ABCDEF';
    $hexStr = '';

    for ($i = 0; $i < $length; $i++) {
        $index = rand(0, 15); // Random index from 0 to 15
        $hexStr .= $hexChars[$index];
    }

    return $hexStr;
}

$length = 8; // Length of the hex string
$hexNumber = generateHex($length);

echo "Random Hexadecimal Number: $hexNumber\n";



/*
run:

Random Hexadecimal Number: F1BF19DB

*/

 

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