Sometimes, when I'm developing an application, I have a blackout: what's the name of this function ? What are its arguments ?
I like having reminder sheets beside me and find out in a second.
In my point of view PDF sheets reminder can be really useful:
If you are a novice developer it can teach you what functions are really useful in everyday developments.
We all forget things. In fact with the amount of information a web developer has to keep in mind it's not really a surprise.
Sometimes you simply forget that some functions actually exists.
This week I made a PHP string function reminder. It gathers every string function I really use daily.
Of course if you have suggestions or if you want to make further additions you can leave a comment.