您已经编写了第一个PHP程序，但是当您运行它时，您在浏览器中看到的只是程序实际上没有运行的代码。发生这种情况时，最常见的原因是您试图在不支持PHP的地方运行PHP。

在web服务器上运行php

如果您在web服务器上运行PHP，请确保您有一台设置为运行PHP的主机。尽管现在大多数web服务器都支持PHP，但如果您不确定，快速测试可以给出答案。在任何文本编辑器中，创建新文件并键入：

phpinfo() ; ?> Save the file as test.php and upload it to the root folder of your server. (Windows users make sure to display all file extensions.) Open a browser on your computer and enter the URL of your file in the format: http://nameofyourserver/test.php Click Enter. If the web server supports PHP, you should see a screen filled with information and a PHP logo at the top. If you don't see it, your server doesn't have PHP or PHP is not started properly. Email the web server to ask about your options.

在windows计算机上运行php

If you are running your PHP script on a Windows computer, you need to manually install PHP. If you haven't already done so, your PHP code won't execute. Instructions for the installation process, versions and the system requirements are listed at the PHP website. After it is installed, your browser should run your PHP programs directly from your computer.

在mac电脑上运行php

If you are on an Apple, you already have Apache and PHP on your computer. You just need to activate it to get things working. Activate Apache in the Terminal, which is located in the Utilities folder, by using the following command instructions. Start Apache web sharing: sudo apachect1 start Stop Apache web sharing: sudo apachet1 stop Find the Apache version: httpd -v In macOS Sierra, the Apache version is Apache 2.4.23. After you start Apache, open a browser and enter: http://localhost This should display "It Works!" in the browser window. If not, troubleshoot Apache by running its config file in Terminal. apachect1 configtest The configuration test may give some indications why the PHP isn't executing.