How to use Emacs functions in PHP

Recently, more and more PHP developers have begun to use Emacs, which is one of the reasons why we need to use Emacs functions. However, the functions provided by Emacs are very rich, so when using it, we often fall into a state of encountering problems but not knowing how to solve them. This article will introduce how to use Emacs functions in PHP to help PHP developers better use Emacs.

First of all, remind everyone that it is best to use the latest version of Emacs, because many functions in older versions may be outdated. Additionally, any necessary extension packages can be installed via package.el or MELPA.

Next, let’s take a look at how to use some commonly used Emacs functions in PHP:

1. Jump to the definition
It is often necessary to jump to the definition in PHP View the code. At this time, you can use the Emacs search function.

Emacs provides a series of commands for use inside Mini-Buffer, including C-s, C-r and C-g for finding strings, going back and exiting, M-n for opening Minibuffer, and C-j for executing commands in Minibuffer. content.

Use M-x find-function or M-x find-variable function to jump to the definition of a function or variable.

2. Automatic indentation
Automatic indentation can make the code clearer and easier to read.

To use automatic indentation, you can use Emacs' indentation tool. For a PHP program, you can use the M-x php-mode and M-x php-mode-c character sets to automatically indent.

3. Auto-completion
Auto-completion can help us write code faster. When you type a character, Emacs will provide you with some available options based on what you type.

The auto-completion function of Emacs is very powerful and allows us to work more efficiently. To turn on autocompletion, use M-x auto-complete .

4. Code folding
When a piece of code becomes too long, you can use the code folding function of Emacs to hide part of the code. This way, the code can be made clearer and easier to read.

Using the folding function of Emacs is easy. Just use C-c @ C-f to select the area you want to collapse, then use C-c @ C-o to collapse the code. If you want to expand the code, you can use C-c @ C-e.

5. Code inspection
Code inspection can help us find problems in the code, including syntax errors, variable reference errors, etc. Emacs provides many tools to inspect PHP code.

For example, you can use M-x php-check-syntax to check the syntax of PHP code. In addition, you can also use M-x flymake-mode to enable Flymake, which can check syntax errors in real time and prompt you when you write code.

Summary:
When using Emacs, understanding these basic functions can help us write PHP code more efficiently. Of course, Emacs has many other functions that can be explored. Interested readers can continue to study Emacs functions in depth to better explore its powerful functions.

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