Let's talk about how to deploy and run PHP

PHP is a popular server-side programming language widely used in web development. Before you start writing PHP programs, you need to deploy and run PHP first. This article will introduce how to deploy and run PHP.

1. Installing PHP

First you need to install PHP on your computer. You can download the PHP installation package from the PHP official website and select the version suitable for your operating system. The installation process is simple, just follow the prompts to install it step by step.

2. Configuring the Web server

The PHP script must run on the Web server. Here we take the Apache server as an example. After installing the Apache server, open the Apache configuration file httpd.conf and find the following line of code:

# LoadModule php7_module modules/libphp7.so

Delete the comment symbol "#" in front of it to enable this module. If you are installing another version of PHP, just change the module file name to the corresponding version.

3. Configuring PHP

Open the PHP configuration file php.ini, you can find some parameters related to PHP operation, as follows:

max_execution_time = 30 ; 执行程序的最长时间
memory_limit = 128M ; 程序允许占用的最大内存
upload_max_filesize = 2M ; 允许上传的最大文件大小
post_max_size = 8M ; 允许POST数据的最大大小

These parameters Can be modified as needed.

4. Test whether PHP is installed successfully

Create a PHP file, such as test.php, and enter the following content:

<?php     phpinfo();
?>

Save the file and Place it in the "htdocs" directory of Apache, and then enter the following URL address in the browser:

http://localhost/test.php

If the configuration information of PHP can be displayed, it means that PHP has been installed successfully and can run.

5. Deploy Web Application

Place the written PHP application in the "htdocs" directory of Apache, and enter the corresponding URL address in the browser. Accessible.

6. Debugging PHP applications

When debugging PHP applications, you can use PHP's error output function. Find the following line of code in the php.ini file:

display_errors = Off

Modify it to:

display_errors = On

In this way, when an error occurs in the PHP application, the error message will be displayed in the browser, Convenient for debugging.

The above is how to deploy and run PHP. With these steps, you can program PHP on your own computer and develop powerful web applications.

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