PHP需要返回echo吗？

Question

是否有可能需要一个php文件并将所有回显的内容返回并存储到变量中？

示例：

//file1.php
// let's say $somevar = "hello world"
<p><?php echo $somevar; ?></p>


//file2.php
$file1 = getEchoed("file1.php");
// I know getEchoed don't exist, but i'm unsure how to do it.

Answer 1

使用输出缓冲：

ob_start();
require('somefile.php');
$data = ob_get_clean();

Answer 2

Output buffering可以做你需要的。

ob_start();
require("file1.php");
$file1 = ob_get_contents();
ob_clean();

Answer 3

ob_start();
include('file1.php');
$contents = ob_get_clean();

file1.php的输出现在存储在变量$ contents。

中

Answer 4

Output buffering：

<?php

ob_start();

require 'file1.php';

$var_buffer = ob_get_contents();

ob_end_clean();

echo $var_buffer;

?>