PHP ob_start() 问题

Question

我是否允许在我的 php 文件中有两个或多个 ob_start(); 如果是的话，结束一个 ob_start(); 并开始另一个的正确方法是什么？

Answer 1

来自手册:

Output buffers are stackable, that is, you may call ob_start() while another ob_start() is active. Just make sure that you call ob_end_flush() the appropriate number of times. If multiple output callback functions are active, output is being filtered sequentially through each of them in nesting order.

除了堆叠(嵌套)之外，您还可以按顺序拥有单独的 block 。

<?
ob_start();
echo "Foo";
ob_end_flush(); // outputs buffer contents and turns off output buffering

ob_start();
echo "Bar";
ob_end_flush();
?>