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基本用法

示例 #1 输出控制举例

<?php

ob_start();
echo "Hello\n";

setcookie("cookiename", "cookiedata");

ob_end_flush();

?>

在上面的例子中，echo 函数的输出将一直被保存在输出缓冲区中直到调用 ob_end_flush()。同时对 setcookie() 的调用也成功存储了 cookie，而不会引起错误。（数据已发送到浏览器后，消息头通常无法发送。）