When comparing Gedit vs PhpStorm, the Slant community recommends PhpStorm for most people. In the question“What are the best programming text editors for a Mac with a GUI?” PhpStorm is ranked 8th while Gedit is ranked 18th. The most important reason people chose PhpStorm is:
PhpStorm has two types of autocompletion: structural completion and word expansion. Structural autocompletion makes predictions based on its understanding of PHP, while the latter tries to predict the word currently being typed based on previously typed words. Word expansion also works in comments and docstrings and it's similar to vim's omnicompletion. Both types of autocompletion work extremely well, have little to no problems and are quite fast even when loading suggestions on the go.
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Pro Plugins allow for added functionality and customization
There are tons of plugins for productivity available in many different workflows, such as a dictation plugin, an encryption add-on, a whitespace remover, and more.
Pro Great UI
The UI is lean and minimal. Everything feels quite fast and it is easy to add custom shortcuts for doing things like compiling, deploying, or testing.
Pro Available on all systems that use Gnome
Gedit is the official text editor for Gnome and it's available wherever any version of Gnome is installed. With thousands of people using it daily and not even realizing it.
Pro Intelligent code completion
PhpStorm has two types of autocompletion: structural completion and word expansion.
Structural autocompletion makes predictions based on its understanding of PHP, while the latter tries to predict the word currently being typed based on previously typed words. Word expansion also works in comments and docstrings and it's similar to vim's omnicompletion.
Both types of autocompletion work extremely well, have little to no problems and are quite fast even when loading suggestions on the go.
Pro Supports various PHP frameworks
Supports Symfony2 (including Twig and Doctrine), Yii frameworks, and Laravel.
Pro PHPDoc support
PHPDoc is a documentation generator. It allows automatically generating documentation from specifically formatted comments.
Pro Inspections of all kinds
Pro Database view
The database tab, while not perfect, provides all the tools you need for daily usage. You always have your DB overview on the side (you can hide it when not needed).
Pro Built-in debugger
Has built in support for Xdebug including remote debugging.
Pro External command support
Ability to setup custom external commands, which is something inherited from eclipse and found lacking on netbeans.
Pro Phar package recognition
Phar support allows running complete applications out of .phar files.
Pro Auto-sync with remote folders
It allows monitoring code and sync the files that need to be changed with a remote server. This works more efficiently than libnotify and faster than vagrant auto rsync.
Pro Plugins allow futureproofing and customization
Active development work on plugins is always a plus, as it can extend the use of the IDE.
Pro Has built-in console and SSH clients
This allows execution of needed commands without switching to other windows. It also keeps track of what's happening right in the IDE, which is especially good with Vagrant, because you can connect to a VM in a single click.
Pro Integrated Git GUI support
Allows users to manage their repositories directly from the IDE with a GUI which lets you do all Git commands.
Pro Zero latency typing
Type codes with pleasure. Delay of visual feedback on a computer display has an important effect on typist's behavior and satisfaction, as cited here.
Pro Lots of plugins
Lots of plugins from JetBrains and the community are available, from useful things like support for Docker, Vagrant, Angular, Vue.js and more useless (but fun) like a nyan cat progress bar.
Pro Integrated Vagrant support
It recognizes Vagrantfile and allows full control from the IDE.
Pro Code Refactoring
Quickly rename classes, methods, and variables used across multiple files in the project.
Pro Responsive core developers
Pro It comes with Testing RESTful Web Services
Save time of building your own or integrating libraries for testing RESTful Web Services. PHPStorm enables you to test endpoints without leaving your workspace or disrupting your workflow . You can code your endpoints in one window and test it immediately from another window.
Pro Templating support
Supports Twig and Laravel's Blade (among others). Technically the later is part of a framework which Phpstorm supports but I've seen IDEs (e.g. Netbeans) with Laravel support but no blade support so it does deserve a notable mention.
Pro Regular updates for fixes and new features
PhpStorm is clearly being developed continually, which gives confidence that it will be available for some time and is not abandonware.
Pro Emmet integrated
Pro Task/Context functionality
Similar to Eclipse Mylyn: you can create tasks or retrieve them from your ticketing system, and each task keeps its own context (opened files, modifications, etc.).
Con Not a lot of features
Gedit is a text editor. Though it's simple and fast, it misses a lot of features, most notably auto-complete for several languages.
Con Confusing interface
For example, finding anything in the settings menu is hard. Most other text editors use Edit->Preferences for managing settings but this is not the case for Gedit.
Con Resource exhaustive
It often maxes out even 4 cores, not to mention several hundred MBs of RSS with a single small project opened.
Currently costs £78 but does not seem to offer much more than some free counterparts.
It is not free software (free as in freedom).
Con Slow performance
A very slow indexing, many memory leaks, large projects after some time will be very slow, opening large files like 10mb can even break IDE.
Con Interface is cluttered
Con Sometimes buggy
Index gets corrupt which results in errors in syntax presentation, code validation and auto-completion. Version-control system sometimes stops working, occasionally freezes in big files