There are four steps to make PHP run on the system: installation, configuration, testing and troubleshooting. First, you need to select the appropriate version to install according to the operating system. Windows can use XAMPP or WAMP, Mac uses brew install php, and Linux uses sudo apt install php; secondly, configure the php.ini file, set the time zone, error report, etc., and confirm that the Apache/Nginx module is loaded; then test whether it is running normally by executing phpinfo(); finally solve common problems such as environment variables not set, insufficient permissions, port conflicts or multiple version confusion. Follow these steps to enable PHP successfully.
It is actually not difficult to get PHP to run on your system. The key is to choose the right method and follow the steps. Different operating systems are slightly different, but the overall process is clear. Let’s talk about how to solve this problem in several aspects.

Install PHP: Select the version that suits your system
First, you have to install PHP into the system. If you are using Windows, you can download the installation package on the official website, or use integrated environments such as XAMPP or WAMP, which will be more troublesome. Mac users can use Homebrew and enter brew install php
to do it. For Linux, like Ubuntu, you can use sudo apt install php
to install.
Note the PHP version. The current mainstream is 8.x, but some projects may still use 7.4 or 8.0, so choose the appropriate version according to your needs.

Configure the running environment: Don't skip this step
After installation, the default PHP configuration file is in /etc/php/xx.x/cli/php.ini
(Linux/Mac) or php.ini
(Windows) in the installation directory. You can open this file to adjust some common settings, such as time zone, error display, etc.
Common configuration items are:

-
date.timezone = Asia/Shanghai
-
display_errors = On
-
error_reporting = E_ALL
These settings will affect the performance of the script operation, especially during the debugging phase, and it is recommended to turn on it.
Also, if you are running PHP via Apache or Nginx, you also need to confirm that the module is loading correctly. For example, in Apache, check whether httpd.conf
contains the path to the PHP module.
Test run: Confirm whether it works normally
Write a simple PHP file to test whether it is running. For example, create a test.php
, with the following content:
<?php phpinfo(); ?>
After saving, execute in the terminal:
php test.php
If you can see a bunch of information about PHP output, it means it is running normally. If you access it through a web server, put the file in the site directory, and then open the corresponding address by the browser, you can also see the detailed page.
Sometimes I encounter different PHP versions or configurations displayed on the command line and web pages because I use different php.ini
files. At this time, you can use php --ini
to view the configuration path used by the current CLI.
FAQ: Check out these points when stuck
Some minor problems often occur, but they are simple to solve:
- Command not found : Maybe the environment variable was not added. In Windows, you need to manually add the PHP directory to PATH.
- Permission issues : Sometimes the permissions are incorrect on Linux/Mac, which makes it impossible to read the configuration or execute the script. Remember to use
chmod
orsudo
appropriately. - Port conflict : If you are using Apache or Nginx, the startup failure may be because port 80 is occupied. Use
lsof -i :80
ornetstat
to check it. - Version confusion : When multiple PHP versions coexist, it is easy to confuse which one is taking effect. You can use
which php
andphp -v
to confirm the current version.
Basically all that is it. The whole process is not complicated, but the details are easy to ignore. As long as you take it step by step, you can usually run smoothly.
The above is the detailed content of Get PHP Running on Your System. For more information, please follow other related articles on the PHP Chinese website!

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