自定义PHP页面跳转函数redirect

/**
 * URL跳转
 * @param string $url 跳转地址
 * @param int $time 跳转延时(单位:秒)
 * @param string $msg 提示语
 */
function redirect($url, $time = 0, $msg = '') {
	$url = str_replace(array("\n", "\r"), '', $url); // 多行URL地址支持
	if (empty($msg)) {
		$msg = "系统将在 {$time}秒 之后自动跳转到 {$url} ！";
	}
	if (headers_sent()) {
		$str = "<meta http-equiv='Refresh' content='{$time};URL={$url}'>";
		if ($time != 0) {
			$str .= $msg;
		}
		exit($str);
	} else {
		if (0 === $time) {
			header("Location: " . $url);
		} else {
			header("Content-type: text/html; charset=utf-8");
			header("refresh:{$time};url={$url}");
			echo($msg);
		}
		exit();
	}
}

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