About the return method in laravel

Question

Why in laravel, return "xxx"; will directly return xxx and output it to the current page. And return "xxxx" in php will not output anything on the page. Are they the same method? How to use PHP original return in Laravel without outputting the content on the page...

滿天的星座 · Answer

In Laravel, the page is not output just because you return, the returned things need to be sent out through the Response，再通过它的sendmethod
.

淡淡烟草味 · Answer

composer intasll can download half of the Internet

曾经蜡笔没有小新 · Answer

Looking at the Laravel source code, the answer lies in the SymfonyComponentHttpFoundationResponse class

The entry file calls a $response->send() method

public function send()
{
    $this->sendHeaders();
    $this->sendContent();

    if (function_exists('fastcgi_finish_request')) {
        fastcgi_finish_request();
    } elseif ('cli' !== PHP_SAPI) {
        static::closeOutputBuffers(0, true);
    }

    return $this;
}

Then look at the sendContent() method

public function sendContent()
{
    echo $this->content;

    return $this;
}

I see here that echo is still used