When we write code, there will always be frequent errors in some places, and these errors are unavoidable and can be ignored. At this time, we can use PHP's error suppressor to block errors.

Usually we need to capture global errors in PHP and then record the logs, so that we can find potential problems in the program in time. But after we set the error callback function with set_error_handler, we still can't catch FATAL level errors. This article describes how to capture FATAL level errors generated during PHP runtime.

The exec command in PHP allows us to directly execute system commands. Many times we will use it. However, due to the limited running permissions of PHP, the execution will fail. This article will help you solve this problem.

When using YUM on CentOS7 to install PHP by default, the installed version is 5.4. When we need to install other versions of PHP, we can refer to this article. This article takes the installation of PHP7 as an example. Readers can also install other versions according to their needs.