格式化打印数组函数

/**

 * 格式化打印数组

 * @param unknown $vars

 * @param string $label

 * @param string $return

 * @return string|NULL

 */

function dump($vars, $label = '' , $return = false) {

    if (ini_get( 'html_errors')) {

        $content = "<pre>\n";

        if ($label != '' ) {

            $content .= "<strong>{$label} :</strong>\n" ;

        }

        $content .= htmlspecialchars(print_r($vars, true));

        $content .= "\n</pre>\n";

    } else {

        $content = $label . " :\n" . print_r($vars, true);

    }

    if ($return) { return $content; }

    echo $content;

    return null;

}