src/utils.php


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<?php
function generate_random_string(int $length): string
{
    $chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    $output = "";

    for ($i = 0; $i < $length; $i++) {
        $charindex = random_int(0, strlen($chars) - 1);
        $output .= $chars[$charindex];
    }

    return $output;
}

function str_safe(string $s, int|null $max_length, bool $remove_new_lines = true): string
{
    $output = $s;

    if ($remove_new_lines) {
        $output = str_replace(PHP_EOL, "", $output);
    }

    $output = htmlspecialchars($output);
    $output = strip_tags($output);

    if ($max_length) {
        $output = substr($output, 0, $max_length);
    }

    $output = trim($output);

    return $output;
}