我通过卸载XAMPP并安装WAMP解决了这个问题。 谢谢你的帮助。

我在Ubuntu上运行Apache，我的问题是/etc/apache2/mods-available/php5.conf文件缺少这个:

<FilesMatch ".+\.ph(p[345]?|t|tml)$">
    SetHandler application/x-httpd-php
</FilesMatch>

我把它添加回来，php正确地解析php文件。

我知道这听起来很傻……但这种情况很少发生。

检查您是否试图从

**http://localhost/info.php**

而不是来自

file:///var/www/info.php

Ps >你可以注意到如果你从shell写

php info.php 

它回答的代码(它意味着PHP函数)..

听起来你的配置好像有问题，下面是一些你可以检查的东西:

Make sure that PHP is installed and running correctly. This may sound silly, but you never know. An easy way to check is to run php -v from a command line and see if returns version information or any errors. Make sure that the PHP module is listed and uncommented inside of your Apache's httpd.conf This should be something like LoadModule php5_module "c:/php/php5apache2_2.dll" in the file. Search for LoadModule php, and make sure that there is no comment (;) in front of it. Make sure that Apache's httpd.conf file has the PHP MIME type in it. This should be something like AddType application/x-httpd-php .php. This tells Apache to run .php files as PHP. Search for AddType, and then make sure there is an entry for PHP, and that it is uncommented. Make sure your file has the .php extension on it, or whichever extension specified in the MIME definition in point #3, otherwise it will not be executed as PHP. Make sure you are not using short tags in the PHP file (<?), these are not enabled on all servers by default and their use is discouraged. Use <?php instead (or enable short tags in your php.ini with short_open_tag=On if you have code that relies on them). Make sure you are accessing your file over your webserver using an URL like http://localhost/file.php not via local file access file://localhost/www/file.php

最后，查看PHP手册以获得更多的设置技巧。

使用Debian 10安装Apache + php7测试的最简单方法:

apt-get update -y
apt-get install apache2 php7.0 libapache2-mod-php  -y
sudo service apache2 restart

php7:

sudo a2enmod proxy_fcgi setenvif
sudo a2enconf php7.0-fpm
sudo service apache2 restart