misc/random_printable_bytes.php


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<?php

/**
 * Generates a cryptographically secure random printable string
 * @return string 
 */
function random_printable_bytes(): string {
    // i think 128 bytes should be enough .. i hope so anyway
    return str_replace(['+', '/', '='], ['-', '_', ''], base64_encode(random_bytes(128)));
}