ctype_alnum

Supported Versions: PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8
Check for alphanumeric character(s)
ctype_alnum(mixed $text): bool
Logo laravel/framework laravel/framework
    public function isValidId($id)

    {

        return is_string($id) && ctype_alnum($id) && strlen($id) === 40;

    }
src/Illuminate/Session/Store.php
Logo composer/composer composer/composer
        $encoded = '';

        for ($i = 0; isset($string[$i]); $i++) {

            $character = $string[$i];

            if (!ctype_alnum($character) && !in_array($character, array('-', '_'), true)) {

                $character = '%' . sprintf('%02X', ord($character));

            }

            $encoded .= $character;
src/Composer/Repository/Vcs/GitLabDriver.php