src/NoCaptcha.php
private function getScriptSrc($callbackName = null)
    {
        $queries = [];

        if ($this->hasLang()) {
            array_set($queries, 'hl', $this->lang);
        }

        if ($this->hasCallbackName($callbackName)) {
            array_set($queries, 'onload', $callbackName);
            array_set($queries, 'render', 'explicit');
        }

        return static::CLIENT_URL . (count($queries) ? '?' . http_build_query($queries) : '');
    }
private function getScriptSrc($callbackName = null)
    {
        $queries = [];

        if ($this->hasLang()) {
            array_set($queries, 'hl', $this->lang);
        }

        if ($this->hasCallbackName($callbackName)) {
            array_set($queries, 'onload', $callbackName);
            array_set($queries, 'render', 'explicit');
        }

        return static::CLIENT_URL . (count($queries) ? '?' . http_build_query($queries) : '');
    }
Get script source link.

@param  string|null  $callbackName

@return string