WordPress needs no introduction. It powerful, highly popular and have a huge community providing loads of free and premium themes and plugins. Still you may fell like creating your own themes or plugins could be fun or a way to get the functionality and look and fell you need. It is not that hard to customize a theme but starting from scratch requires some experience or assistance. I have previously provided an article that could get you started by itself, 40+ Awesome Tutorials and Techniques For WordPress Theme Developers. Still having access to a good set of cheat sheets will for sure help you speed up development even more. This article provides a comprehensive list of all the WordPress Related Cheat Sheets I have been able to find and some are really useful. Let me know in a comment if I missed anything!
Pure WordPress Cheat Sheets
The WordPress Help Sheet includes the following:
- Basic Template Files
- PHP Snippets for the Header
- PHP Snippets for the Templates
- And Extra Stuff for WordPress
View PNG Cheatsheet : View Cheat Sheet
Source : headzoo.com
View html Cheatsheet : View Cheat Sheet
Source : design-notes.info
View HTML Cheatsheet : View Cheat Sheet
Source : frozr.comg
You can find link to pdf version in the comment section.
WordPress Related Cheat Sheets
When working with WordPress Themes and plugins you will most likely need to dive into some CSS, HTML, PHP and SQL. If you’re building a really dynamic and interactive stuff some jQuery and related technologies could be relevant.
PHP Cheat Sheets
The PHP cheat sheet is a one-page reference sheet, listing date format arguments, regular expression syntax and common functions.
This website contains a 2-page light and lean PHP cheatsheet and an 8-page comprehensive PHP cheat sheet for committed PHP developers
3 cheat sheets covering comparison using different operators etc.
HTML Cheat Sheets
This cheat sheet is designed to be a quick reference to all of the elements and attributes available in the XHTML 1.1 specification. And because XHTML 1.1 is designed to be modular, it is organized into sections to mirror the XHTML abstract modules and the elements and attributes contained within each.
Good looking and well structured html overview
The information is pretty much just a copy of what is found in the WHATWG specs, just condensed and hopefully a bit easier to read. There are virtually no explanations, however, and no examples other than some graphics for compositing values and a few other things (the appearance of which is very much inspired by those found in Mozilla’s examples). So, it’s basically just a listing of the attributes and methods of the canvas element and the 2d drawing context.
This cheat sheet contains a list of all of the HTML 4 character entities including ISO 8859-1 (Latin-1) entities. The characters are organized into 8 groups: Latin characters, Greek characters, numbers, puncutation and miscellaneous symbols, mathematical symbols, currency symbols, arrows and shapes, and spacing symbols.
Each character contains a unicode entity reference (e.g.  ) as well as a named entity reference (e.g. ) where available.
CSS Cheat Sheets
This cheat sheet is designed to not only be a quick reference for CSS properties but also to give you a good feel for how each property should be used. It contains all of the properties in the CSS2 specification including a description of the syntax of each one. There are also sections that describe selectors, pseudo-elements and pseudo-classes, @ rules, and colors.
Good looking and well structured CSS overview
The CSS cheat sheet is a one-page reference sheet, listing all selectors (as of CSS 2.1) and properties. It includes a visual example of the box model, unit reference for CSS units and the various media types CSS makes allowance for.
All you need to know about CSS in 3 parts. These documents go through all important aspects of CSS on a minimum number of pages.
Get help with some of the CSS elements that are so easy to forget.
Scripting Cheat Sheets
Quick reference to all jQuery 1.3 functions and properties. Note that it doesn’t cover any of the UI functionality as this could easily be a whole cheat sheet in and of itself.
This sheet cover Core, Native, Class, Element, Utilities and Request
Very comprehensive overview of jQuery selectors. This is a must have for every jQuery developer!
SQL Cheat Sheets
Search Engine Optimization Cheat Sheets
Creating good content that is presented in the right way is important but only haft the way to get visitors. Understanding and mastering Search Engine Optimization, SEO is quite essential and here you get some really good overviews
This cheat sheet cover most of what you need, Important SEO Html Tags, Search Engine Indexing Limits, Recommended Title Tag Syntax, Common Canonical Issues, Important Search Engine Robot User-Agents etc.
Colour Codes Cheat Sheets
The RGB Hex colour chart is a very large (183kB) PNG file, and is sized to fit on a standard A4 piece of paper. It shows the 216 so-called “web safe” or “non-dithering” colours (there are actually only 22 web safe colours, but those are revolting).
This cheat sheet contains a chart of 1050 colors grouped by hue and varied into 25 different saturations and brightnesses for each. Each color has the HTML color code reprsented as a Hex triplet (e.g. #808080). Also, it contains a chart of the 216 Web-safe colors and each is represented as a single-digit Hex triplet (e.g. #999).
It’s great to have you here and we want you to stay around! If you want to see some great themes these Restaurant Menu Templates might be what you’re looking for. Also do not miss these great Kindle 3 covers if you have a new generation of Kindle.