PHP需要返回echo吗？

Question

Is it possible to require a php file and get all the things that's echo'ed to be returned and stored into a variable?

Example:

//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

Use output buffering:

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

Answer 2

Output buffering can do what you need.

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

Answer 3

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

The output from file1.php is now stored in the variable $contents.

Answer 4

Output buffering :

<?php

ob_start();

require 'file1.php';

$var_buffer = ob_get_contents();

ob_end_clean();

echo $var_buffer;

?>