在PHP中存储回显字符串

How to grab the string that a function echoes to a variable?

如何获取函数与变量对应的字符串?

I've go a function similar to this:

我有一个类似的函数

    function echoer() {
        echo 'foo';
    }

I cannot change it's source. What I would like to do is to store 'foo' in a variable instead of letting it go to the standard output. How is it done in PHP?

我无法改变它的来源。我想做的是将foo存储在变量中，而不是让它进入标准输出。如何在PHP中实现?

2 个解决方案

#1

ob_start() will start an output buffer which will suppress all content. Then, after you have done all the output, call ob_get_contents() and assign it to a variable. Finally call ob_end_clean() to start echoing normally again.

ob_start()将启动一个输出缓冲区，该缓冲区将抑制所有内容。然后，在完成所有输出之后，调用ob_get_contents()并将其分配给一个变量。最后调用ob_end_clean()重新开始正常响应。

ob_start()

echo "This content won't be echoed immediatley";

$contents = ob_get_contents();

ob_end_clean();

echo $contents;

as Milen mentioned, check out Output Control functions.

正如Milen提到的，请检查输出控制函数。

This method is very useful, especially for working with Wordpress, which is set to output most things, like comments, and doesn't provide a return function.

这个方法非常有用，特别是对于Wordpress, Wordpress被设置为输出大多数东西，比如注释，并且不提供返回函数。

#2

Use the output control functions.

使用输出控制函数。

#1

ob_start()

echo "This content won't be echoed immediatley";

$contents = ob_get_contents();

ob_end_clean();

echo $contents;