I had a look at the apps on the app store for this and couldn’t really tell if they did what I was looking for from the screenshots, so was reluctant to buy them, then Andy suggested that I should make my own, so here it is:

Features

• Find as you type
• Offline access
• Home screen icon
• Also works in firefox sidebar

Still to come

• Syntax highlighting
• Links to full docs
• and more…

Try it for yourself at bit.ly/phpref and let me know what you think